New studio build Need help

Hi my friends I have this space on a second floor in a truck station I need to change into a studio and rehearsal space for my band I will need to build a control room and a small ISO booth the ceiling is going from 1.56 m in the ends to 3,10 m in the middle then going back to 2.24 m. What would be a good idea for a control room and ISO booth I supply drawings of the space and also for the first floor who I will share with the truck station and the Fishing shop (on second floor also) so i will not have to think about those things in the studio The space is in a industrial area so I dont have to worry a lot about neigbours. And you maybe ask How I can have studio with a shop and a truck station Well Its about 500 people living in my town and the Man who have the fishing shop is my band ex Guitarist and the truck company is my bands main sponsor, move all the gear for us for free supply us the house and the only thing we have to do is to play on their party one time a year Thanks a lot J. Ægir I. Iceland