That sounds about right...lol. First we'd need to know what kind of room you are starting with. Finished or unfinished like Yamaha said. Doors are the biggest pain. Best I found to start with are the metal doors with magnetic weatherstripping. I made a custom threshold.i used 4 cans of spray foam,5 or 6 tubes caulking
who me said:i used 4 cans of spray foam