ive got an 04 coupe doin a fullsuspension setup that consists of megan coilovers spc camber kits f/r, sway bars, chassis bars the works and my rims and tires are exe konvex 20x9 +20 245/30/20 and 20x10 +25 275/30/20 im lookin to drop the car so that the fenders will sit right around the tire maybe lower i dunno yet. should i roll the fenders for this and is it front and back i gotta roll or jus the back?

 

Your wheel/tire application will not rub even with OEM alignment. You should be safe.
The rear clearance may be somewhat close without a fender roll(about 6-8mm) between the top of the tire and the fender but will not pose a problem unless you plan to use snow chains.

 

dont really need a roll with those offsets and factory camber specs.