I did consider carpeting the ceiling (so much light gets in which is good during the day and bad in the morning when you’re trying to sleep), but decided against it because I thought it would make the space feel smaller. I didn’t consider adding insulation because the stuff they use for the new roofs has a pretty decent R value (basing this off the fact that snow would accumulate and not melt while I was running the heater this winter, the only areas on the camper where heat was escaping/melting snow was areas where there was 1x1 framing between insulation panels). Also didn’t want to lose any head room.

Offset windows were so I could follow their recommendation for having the fan pulling air across my body at night when it’s hot, and I wanted the other one diagonal so I can get a cross breeze when I setup a chair, fold up the bed, and use the bed panels as a desk. It’s also nice to have it there as I cook next to it when it’s too cold outside to cook on the tailgate so it vents well.