Looks fantastic. I've never thought bout mounting the 150 center on the top like that... interesting. what type of screen material is that or is it a pre-made?

I'm working (well actually at the thinking stage) right now of how I want to do my screen. I've had great luck in my last house with a real smooth sanded flat white painted wall. I'm wondering if I should make a real screen out of some material this time around.

Good luck with the finishing up work. I hate drywall finishing more than any part of the job. kudos to you for doing it yourself.