My new HT website (click here) includes a page about my homemade screen which includes fold-down 2.35:1 mattes to mask off wide-aspect-ratio movies. Most of the ideas came from this forum, although the fold-down matte design was my own creation.
Very Nice Home Theater...
I especially like the Seating you found.
Please tell me you are going to paint that WHITE door next to the screen or at least hang a curtain over it.
When you decide to upgrade the Speakers, my suggestion since you seem woodshop handy would be to consider building custom Horn speakers.. (just like the theaters have). http://www.parts-express.com/ has very good prices on all their components.