>>96315978
>multi function dual action built in compressor
This thing? It's fine for priming and topcoating, for painting it's pretty nah
>Do I actually fucking need air paints? Can I not just mix 1:1 paint and water and have it go just as well? I don't want an entire extra library of paint just for my brush
No you don't need air paint
>Should I get flow improver or mixer or whatever it's called? Will that be better to use than water, since waters got minerals and whatever the hell?
You should get the flow improver, it help with airbrush tip drying