I ended up buying a pretty cheap compressor. 1HP. 4 liters tank. The tank could've been a little bit larger, can't do 60 fps for very long, but I'll manage. It was kind of "cheap" at $150. It even came with a nail gun, not sure what to do with that, except nailing stuff?
I do need to pick up a moisture separator for it, which I'll do tomorrow and try spraying my first mold after that. Can't wait to see how much I'll mess up my kitchen. Maybe my dog will turn red as well?