Peter,
I would like to recommend, that if you go with the rustoleum, you might consider buying it in a quart or gallon size can. There is the same amount of paint in a quart as in about 5-6 rattle cans for the same or less money.
Like you, I didn't have the equipment to spray it, but I bought a cheap paint gun from Harbor Freight and had a go at it. I thinned it down with acetone and found that if you can run a rattle can, you can spray with a paint gun. I painted the bumper, splash apron and hubs on my 3 ton this way and they turned out pretty good. I wouldn't want to jump in and paint my cab or anything, but for bumper or frame work I would give it a try. Just my .02, hope it helps.
Scott
