It's worth $5001, so you did good. I think you did fine, and from what I can see in the pictures your cab metal looks excellent for being a big truck. Usually they get lots of dents. Most, if not all 28 trucks had wire spoke wheels, but they can be easily swapped. Show us the cowl lower lacing, so we can tell if it has the early or later style lip. Also the tank date would be helpful. The main thing is you have something you can drive right away and have fun with.