lol are you for realz?
it's rear wheel drive and have little weight in the back, so it will handle like shit. (unless you put something in the "bed")
you're going to get shit milage no matter what....i don't think they make a camino with anything smaller than a 3.9L.
also it's considered a collector car so you'll pay a lot to purchase one originally, for repairs (unless you're doing it yourself) and for insurance.