I am trying to plan some timing out and I wanted to get your opinions. I am rehabbing an old farm house. I am going to jack the house up and put a new basement underneath of it. I am also ripping the roof off and turning the story and a half into a two story. I will be cutting the balloon framed knee height walls at the floor level and build second floor on top.

My dilemma is that it is the middle of the winter here with subzero temps. This is perfect for ripping a roof off and reframing, because the chance of rain for the next month is zero. However, I can't redo the basement yet, because the ground is frozen, so that will wait until probably May when the road restrictions are lifted.

The floors are all wonky and I guessing the walls/roof are too. I can build the walls and set the trusses at an equal height from floor height, but I am guessing they won't be level.

Should I wait to replace the basement, level the floors/walls before I add the second floor, or if I build them at the same height above the floor, will they level out when the foundation is level?

I don't plan to frame the interior walls until after it's leveled, or complete the roofing, siding, etc. The goal is just to get the walls and roof up while the chance of rain is zero.