We own a 2011 Surveyor SP293. While it's not the same model as yours, I can speak to the quality of the TT. It's very well built. We had a small problem with the fridge the first month, but it was fixed quickly by our dealer and was covered by the warranty.
We've used ours in weather as cold as 29F. You can use the propane heater which does a great job of heating the unit, but we found that the propane adds way too much condensation besides the electricity is free. We use a small space heater with a fan to keep the chill off. During the day we point it toward the living space, and during the night we point it back toward the bedroom.
Hey, h20ski, you're right down the road from me.