I'm now completely confused about tow vehicles

If you need a truck in the long run go ahead and just get the truck and tow it out yourself. It will be cheaper (even if you sold the truck at the other end, it would still probably be cheaper).

I would go 3/4 or 1 ton. It will hardly be any cost difference from a 1/2 ton. Even though some 1/2 tons could handle it, why mess around when you have to buy a truck anyway. Get a 4door or extended cab and no problem taking the dogs along.