Thompsons generally run big. My ATZ's were a full inch wider than the spec size. And im targetting 5-5.5", not a full 6" so I think that size will work out nicely and allow me to flex a lot offroad.
...but if they came in a 305/70/17 I would definitely be torn on which one to get! We'll see how much clearance I have with my current tires after the lift. If i think the 65s will be too small i'll go a different route.