[VA72C10]

Best advice is to make a two column list with pro's and cons of both. Then make the same list with the valuable parts for both and current condition (rust/mechanicals)

If it's even or in your favor...then do it since you're looking for a 4x4

I'd also see what he wants cash and then figure what yours is worth currently and see if it makes sense to swap or to try to sell yours first to buy his...