Warforged Phoenix Sorcerer

Making a Warforged Phoenix Sorcerer. Forged in the flames of the Phoenix for battle, to be played as a sentinel robot. Re-skinning spells to fit the theme.
Light = flashlight
Firebolt = incendiary ammo
Magic Missile = heat-seeking missiles
Burning Hands = flamethrower
Color Spray = flash grenade
You get the idea.

1. What spells should I take to fit the theme?
2. What multiclasses (if any) would be good for this? Monk 1? Tempest Cleric 2? Druid 2 to be a transformer?
3. What feats would be best?

Well obviously Scorching Ray is a must
Sleep?
I'm not quite sure, it's a big flavour leap.

Healer feat could be dishing out medkits. Fireball can be a rocket and bonfire can be napalm.

Sleep doesn't really fit the idea... Call it knockout gas? lol
Scorching Ray and Fireball are definitely appropriate.

Healer feat is an interesting idea. I'm not sure if it's worth taking over CHR+2 or Actor at level 4. Warforged isn't exactly an optimized race to begin with, so I feel like I'd at least want CHR18 before experimenting. Plus isn't that mainly for a Thief Rogue build?

I'm very tempted by the Tempest Cleric 2 dip, but I don't know when to squeeze it in. Maybe I should start with them? It'd give me a powerful punch once per short rest and access to heal spells. But while we're on that subject, how could I justify heal spells thematically? Booster shots?