Anyone know where I can get a replacement screen for a CE that is compatible?
(by compatible, I mean that the screen has to fit in the same place as the old one, and has to be electrically compatible. The resolution might also have to be the same, as if I did manage to get a higher resolution screen, there would probably be a lot of restructuring involved)

I also need to know how to remove the old screen and put in the new one. Any tools needed/ what's the estimated budget? I have a soldering iron, and I've already disassembled the calc, just haven't separated the board from the keypad side.

I'm not sure this is really possible. Like the rest of the ti-84 + series, the screen is attached to the main board by very very fine ribbon cable. Unlike the ti-83's where the screen was its own daughterboard attached by an easily replaceable ribbon cable, this would be just about impossible to do.