depends on the paint you buy, i get the paint from parts plus.... took a compressor, and my pops spray gun, turned out pretty nice i might add....... even with the black that is heard to be so hard to paint!
i did it in my garage, and before it was done outside in front of my pops storage unit....
the orange peel is know as 'fisheye' and it is from wax, oil, grease, or other materials not allowing it to adhere....
i'm gonna be repainting it this summer... u want a day with warm sun, and no breeze... other than that, make sure you get a good primer, and lay it on thin, but multiple coats, and sand with a very fine paper between coats... should take about 3 hrs for a really nice paint job! good luck,