you can probably get a 4 post lift in there, but it will eat most of your budget up.

If it were me, I'd frame/wall it first, and see what my budget let me do. I'd then go for an opener, then an air setup (decent compressor, hose reels, etc.)

You might be able to find a good deal on a used lift, my company sold a nice 4 post on ebay dirt cheap, just looking to get rid of it.