Hi Broken One. So first, I haven't played in a while and may be rusty. I'm just going to give my instinct answers on the specifics of your situation, and let my guide fill in the gaps.
I think the guantlets are the really interesting discussion. And I think you've nailed the key point. You need to be careful not to hamstring your character in the event those guantlets are somehow taken away. The big area of consideration with a high strength are multiclassing, weapon choice, feat selection, and party role.
I mention party role, as early game, the guantlets can let you act as a main damage dealer. You can straight up compete with a fighter or rogue based purely on stats. Worth figuring out who else is in your party, and where you want your emphasis to be. Late game, stats will catch up to your 19, and eventually surpass it, but you remain viable.
RAW, your guantlets mean you meet multiclassing strength prerequisites (although RAI, it's been clarified that your un-itemed base stat should meet prerequisites). This means a multiclass like Paladin is less MAD. Although since you can't wear heavy armor like some strength buds, this isn't a pure win for you, since you'll still want to increase dex to keep up AC (although you could potentially focus INT for AC, if your party is good at managing encounters).
Your weapon choice is probably the most possibly impacted by loss of the item. Without multiclass, you only have proficiency with the small list of wizard weapons and a single weapon of your choice. If you choose a non-finesse weapon, and lose your guantlets, you're out of luck! A more interesting consideration might be the staff you already have proficiency with. It's now viable as a strength item, and will suit you well if you come across a magic staff that you don't want to have to switch in and out with your primary weapon. If no one else is asking for the guantlets or your spider staff, you may have an interesting build opportunity.
On that last note, you can now consider some new feats essentially restricted to strength builds. Polearm Master is a very interesting way to gain a BA attack without TWF. That BA attack achieves the same goal of an additional attack to stack your bonuses on while only doing an average of 2 damage less than an offhand rapier. It interacts with Haste and the SCAG can trips in the same way, and the AOO effect is a great defensive buff, especially if combined with War Caster and Booming Blade. This is a similar situation to the weapon choice problem though... You lose the guantlets, and this feat becomes almost useless since you struggle to land attacks with a staff.
I now really like the idea of a Polearm Master strength build if you can take both of those items. Might lack the flavor of the book prompts you liked, but I'd be surprised if you struggled to find flavor for a singing dancing wizard walking on ceilings smacking people with a poison staff.
Good starting point for all this might be talking to your DM and figuring out how likely he is to take away your guantlets. A lot of DM's will tell you to go ahead with your cool build, and they won't steal your stuff. But if they shrug their shoulders and wink at you, I'd think hard about your choices.
I think the guantlets are the really interesting discussion. And I think you've nailed the key point. You need to be careful not to hamstring your character in the event those guantlets are somehow taken away. The big area of consideration with a high strength are multiclassing, weapon choice, feat selection, and party role.
I mention party role, as early game, the guantlets can let you act as a main damage dealer. You can straight up compete with a fighter or rogue based purely on stats. Worth figuring out who else is in your party, and where you want your emphasis to be. Late game, stats will catch up to your 19, and eventually surpass it, but you remain viable.
RAW, your guantlets mean you meet multiclassing strength prerequisites (although RAI, it's been clarified that your un-itemed base stat should meet prerequisites). This means a multiclass like Paladin is less MAD. Although since you can't wear heavy armor like some strength buds, this isn't a pure win for you, since you'll still want to increase dex to keep up AC (although you could potentially focus INT for AC, if your party is good at managing encounters).
Your weapon choice is probably the most possibly impacted by loss of the item. Without multiclass, you only have proficiency with the small list of wizard weapons and a single weapon of your choice. If you choose a non-finesse weapon, and lose your guantlets, you're out of luck! A more interesting consideration might be the staff you already have proficiency with. It's now viable as a strength item, and will suit you well if you come across a magic staff that you don't want to have to switch in and out with your primary weapon. If no one else is asking for the guantlets or your spider staff, you may have an interesting build opportunity.
On that last note, you can now consider some new feats essentially restricted to strength builds. Polearm Master is a very interesting way to gain a BA attack without TWF. That BA attack achieves the same goal of an additional attack to stack your bonuses on while only doing an average of 2 damage less than an offhand rapier. It interacts with Haste and the SCAG can trips in the same way, and the AOO effect is a great defensive buff, especially if combined with War Caster and Booming Blade. This is a similar situation to the weapon choice problem though... You lose the guantlets, and this feat becomes almost useless since you struggle to land attacks with a staff.
I now really like the idea of a Polearm Master strength build if you can take both of those items. Might lack the flavor of the book prompts you liked, but I'd be surprised if you struggled to find flavor for a singing dancing wizard walking on ceilings smacking people with a poison staff.
Good starting point for all this might be talking to your DM and figuring out how likely he is to take away your guantlets. A lot of DM's will tell you to go ahead with your cool build, and they won't steal your stuff. But if they shrug their shoulders and wink at you, I'd think hard about your choices.
