I have a setup that I use a lot in the summer. I got a free double oven from a guy down the street. Plus I use a radiant propane heater for the bigger parts. I use the Chicago Electric gun. It's a good gun for the beginner. I get consistent results and it's easy to use and clean. Buy your powder from the internet (ebay is good). A place called Pendry Coatings and also Columbia Coatings are good for prices and supplies. The powder must be kept dry and don't let it freeze. It tends to clump. Make sure your air is bone dry, use a disposable water trap at the gun.
I've done alt brackets, upper A-arms, power steering pump brackets, engine covers, valve covers, aluminum intakes, pulleys, and countless small brackets. It's great and a good way to make some extra cash. I do it for my friends who have small parts. I offered to do it for board members if they sent me parts that were ready to be coated (sandblasted and clean). I recommend doing lots of research, find out the best techniques and see how others are doing it.
Columbia Coatingshas a good website with lots of tips and the guys there are very helpful.
Good luck and ask on the board if you need any help, I know a few of us are doing it. I've recently gotten into zinc plating. I did a mustang carb for a guy at work and it came out great. Anything to make a buck.
jmanz69