Well we are slowly making progress . Here is sketch do the design
As some of us pointed out early on, looks like you're setting the seats too far away (at 17ft) from the screen and could likely also use a bit more space behind the back row (for likely better acoustics). For a 140" screen (even if, or maybe especially if, 2.4:1 for CIH), I'd probably suggest somewhere around 12-14ft viewing distance for the front row -- that means having that row of seats be ~10-12ft away from the screen. Personally, I'd go for the shorter distance, especially if going 2.4:1 for CIH, which will have a substantially smaller image for a majority of content that aren't 2.4:1 (or wider)... unless you really only intend to watch wider AR content for the vast majority of viewings -- even if you do that, I'd still prefer the shorter distance myself, especially for the front row...
And also realize that the viewing distance will be another 5ft-plus farther for the back row w/ how you have it -- that's pretty substantial... unlike in a real theater where everything else is much bigger (and 1 or 2 extra feet isn't a big deal)...
_Man_