Thirty inches wide. . . That'll be a tight fit through many doorways. You may have to take doors off their hinges to get it through.
It's a much bigger cabinet, with a much bigger monitor, than I personally would prefer, and much bigger than the one I am building. But if big is what you want, then it does seem reasonably proportioned.
The monitor angle is the same I chose for my cabinet, incidentally. It's space-efficient and seems like a comfortable viewing angle.