I think if you get over a $1k they will be tougher to move. I’ll try to find my pics of the one we are getting with some slight modifications. Todders hooked me up with his guy in Mora.
Let’s see some pics. I don’t know that insulation is needed for the most part. We didn’t insulate the one we built and it was awesome for bow hunting. Come rifle season, I could see having the extra warmth. For me, I just like being out of the wind.