Well, I deleted my previous post after reading Zeke's, I am unsure about needing neutral for a dedicated outlet, even after reading code. Necessary for new ovens and electric dryers.
Other appliances seem vague. However, it's certainly safe to run 10/3. (white, black, red, and a ground)
For the grinder, consider these flush-mount receptacles:
Sillites - Candle For The Window | Electric Window Candles | Flush Mount Receptacle We use them in islands and cabinetry, the device serves as the receptacle and box, just drill an 1-3/4" hole, connect romex and you're done.
Sharkbites and braided water line should serve for water supply.
My concern about drain would be freeze protection, and bugs or rodents using it as an entry. I would not dump it into sewer directly, considering traps and venting.
Is there a laundry tub or sump pit downstairs ?