I mentioned the kero heater as well. If you are using one in a tent you CANNOT seal up the tent tight. Adequate ventilation is required. Fresh air from the top and the door left open at the bottom to allow escape for the bad gasses. That applies to any heater that is burning fuel. Also sleeping on a cot two feet off the ground would be a good idea as well.

The army tent I have is Canadian. 2-3 sections can, and I have set it up by myself. There are no center poles, the support is like an A without the horizontal bar. Set one side up and then the other. 2 sections with ends would weigh about 200 lbs, each support about 40(x3 for 2 section). Granted, many hands make light work. In the case of 2 section3 guy's can do it very easily.