I think it would be worth more completely stock than with the kind of changes you described. Unless its in much better condition than it sounds like you might want to keep looking.
A buddy of mine bought a '66 'burb a month or two ago for $800 and drove in onto the trailer to drag it home.
Its not 4x4, which is worth something if you want it, but otherwise sounds like a cleaner better truck.
All that said, I'm not sure you'll find one cheaper. My question would be do you like the changes, and if not, think about the cost of undoing them.
I don't know about the '60 - '66 trucks, but for the '47 to '55 Suburban specific body panels are basically only available from one guy who makes them by hand.
He's in your part of the country, but I don't think he is doing your truck.
