Great progress BHawthorne! What screen material are you going to get from ebay? As far as gain goes, I wonder if you'll need less than you think because of reflections from opposite sides? Since the sides are traditionally dark in HT setups I wonder if the 2k lumens on the L/R might necessitate gain more as if you had lots of ambient light.
Question for you. Do you think the Sol7 blending would be too distracting in the middle of the screen?
I was thinking about starting out with only 2 of these since they are displayport http://accessories.us.dell.com/sna/productdetail.aspx?c=us&cs=04&l=en&redirect=1&s=bsd&sku=224-5768 @2560x800
I'm getting my screen material from http://stores.shop.ebay.com/protheater__W0QQ_armrsZ1
Interesting projector. It's the first DP projector I've ever ran across. Be sure to check out the lens throw in comparision to the sizescreen you eant to run. Make sure you have enought distance in the room to properly project the screen size. I use the Projector Central calculator.
As far as my setup, no real progress at the moment. It's up and running and I've thrown an area rug into the room and a couch in the back for tv and movie watching.