I agree. I only use rust oleum on metal stuff I don't care that much about. Like a shovel, wheelbarrow, or patio furniture. I think you would be better off with lacquers, IMO. Although it is more expensive, I use Tamiya model spray cans on just about every model. If I can't find the color I want, I will often use automotive touch up spray as well.
Tamiya dries fast, and is hard to mess up, unless you hold that button done and try to spray the heck out of something in one coat. Two or three light coats of the Tamiya, with a final, wetter coat should get the gloss look you are after.
OK, I lied. I have never painted any of my shovels. I just let 'em rust.