[sourdough]

If that 8600 is the actual, truck only, weight (and the things you listed), then you've got 1400lbs. to play with. From that subtract the tongue weight, 1050 say; hitch - 120lbs = 1250lbs. That leaves 150 of your payload left for jacks/blocks/cribbing/tools and compressor, all of which you need. So you are right at that margin. Post a pic of the gray sticker with your gawrs on it. That will help determine exactly where you are in the scheme of things - the diesel hurts on payload on a 3/4 truck.