Glad we could help, Carp.
my first row is about 11-12 feet away to the head position as well and I think it's great. I had the same concern about being too close, but after we watched a few movies it was deemed just right.
the back row almost seems too far now, haha.
Do your rear seats recline? I've been playing with mine and with a full recline in the rear row and me slouched down a little I'm missing the first 1-3 inches of the bottom of the screen. I know this is a drastic scenario, but it made me think I could have went to 2x12s just to raise it a hair to help out since I'm typically in a full slouched position. If the front rear seats are also reclined it's pretty much a non-issue though. For me it was a compromise as I didn't want to build a step since I wanted to leave as much room in the aisle as possible. I know it's not a huge deal, just something to consider. Maybe you can mock up the height for your riser and see for yourself.
I've still got to pick out and order carpet for the top!
-Finishing riser carpet, obviously
-Clean up the room!!
-Front wall full treatments using 2" fiber board wrapped in black fabric of some sort
-Put L&R speakers on stands to raise them up 6-8" - right now my rear woof is firing almost into the frame of my screen, hah
-Remove grills from L&R speakers and toy with placement a little bit more
-Build a new equipment rack for sub amps in the closet. I've been thinking about this hard as my current spot is very hard to access. After some consideration, I could keep the same area, but make an entry way/door/panel through the bathroom! I'll need something sturdy as I'm likely going to be moving to heavier amps.