Would you do it at home if it cost you 5USD a roll in chemicals? Or even better, 1.75USD per roll? Tetenal 5L E6 is around 100USD. Obviously shipping will cost but it won't cost more than 50USD. You need an aquarium heater and a small cooler for a water bath. Chems should be ~38C for FD and CD steps. The rest are less critical. You can hand process this (plenty of people do) and think about all the saved money you could use to buy more slide film.
Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.