So what did I do? I told another guy about the 7k trailer and he decided to buy it ! He's a friend so I offered to put in a third of the money if I can use it once in a while. It comes with a pintle hitch for 2" receiver (which I have), and a pretty zoot controller for the brakes (which we'll put in his Ford). I'll get one for my Chivvy.
So I guess that despite all the sound advice against it, I'll see if the Silverado's tranny will let any of its smoke out.
I'll probably only move my tractor once in a while - and not far. I'll post the results - from the hospital or jail.