Ovinomancer
No flips for you!
[MENTION=16814]Ovinomancer[/MENTION]: There's not much point in continuing to ask the OP questions. He's been banned from his own thread.
Holy cow, that's hilarious. Must have happened while I was composing - I had that window up for some time.
Re: Animate Undead.
It's not 5 per casting, it's 8 per casting as a 5th level slot. You start with 4 and get 2 more for each spell level above 3rd. You're using 5th level spell, so 4+2+2=8. If your simulacrum also casts it, then it's 16.
However, you cannot keep casting it over and over. The undead are under your control for 24 hours, and if you recast it, you regain control for an additional 24 hours. You do not get more undead. So you have, at most, 16 undead using 5th level slots between you and your sim. You can use a higher level slot if you want, but as those are limited, that caps them at 24 hours (after that they are uncontrollable and may attack you and your sim; not like they'd be a threat to you) OR it caps your most recent long rest at 24 hours ago.
Well... not quite. Firstly, we must have different spell listings, as the spell created 1 undead +2/spell level above 3rd.
After that, you can cast it as many times as you can, and each time you get another 5 undead under your control (assuming a 5th level slot). So, if you have 2 5th level slots, you can have 16 undead under your control.
However, as you note, you lose control over them after 24 hours if you don't cast the spell on them again.
Theoretically, the coffeelock could have some arbitrarily high number of 5th level slots, and therefore a large number of zombies and skeletons, but he couldn't retain control over them for long, as he'd eventually run out of whatever large buffer of sorcery points he has, considering he cannot regain enough per day to balance out the daily casting requirement.
Short rest 11 times a day (gotta have 1 hour you are casting the spells and not resting, right?) is 2 2nd level warlock slots burned for 4 sorcery points a rest, so 44 a day. 44 sorcery points is 6 5th level spell slots a day. So, each day of full shortresting means the coffeelock can control 30 zombies and/or skeletons. That's, like seriously threatening. Like, it's not even an easy encounter for a 16th level party of 4. It is an easy encounter for an 11th level party of 4, though, so maybe those undead are off gently menacing that party?