You don't even need a booth to get a good paint job, you can paint outside or in a garage with some poly put up. This car was painted outside in the middle of July and I spent $400 on materials...
and I've done other "$4000 paint jobs" with limited funds materials and no real spray booth. Just quit being a lazy hipster kid who wants to copy some bullshit they see at a local gas station stancer meet to follow yet another trend. You know it doesn't actually look good but are afraid to admit otherwise.
If you paint outside or in a garage just plan to wetsand and buff it afterwards. And paint doesn't have to be expensive and it is NOT hard if you follow a good step by step and get some pro tips. Look in the DIY paint and bodywork thread I've posted a lot of useful info in there along with the original poster and others who do a lot of body/paint. There is really no argument for plasti dipping a car.