IMHO, you would be better off getting a skoolie and installing those windows if those are what you want. Considering you want a roof raise, and such, the carbon fiber body becomes VERY weak during a roof raise and the whole structural integrity is compromised as well. School buses are designed to be brawlers with lots of steel to handle being upside down and not crush in. Thus you see lots of school buses getting roof raises. I do not have the facility, time, nor budget to do a roof raise, but I do appreciate roof raises done correctly and safely. The raise will give you options for larger windows and taller doors. I would not look at this fiberglass bus as a good candidate for such a project just in terms of safety alone.
Firearms stand next in importance to the Constitution itself. They are the American people’s liberty teeth and keystone under independence. — George Washington