Eric, that looks like a nice, open basement layout. You've got a good-sized area set aside for the theater. It'll look great when it's done!
How high are the celings? Since it is a light-controlled room, I would strongly suggest doing a bit more research on the projector and screen. The room geometry (including ceiling height) will have a strong impact on whether or not a projector will work for a given screen size.
Speaking of screen size - did you have a size in mind? At a seating distance of roughly 10 feet, a 100" screen is not out of the question - especially for a 1080p projector. If anything, you can probably shift the seats back a foot or so, and you may discover that a 6" riser is not enough, but that doesn't really impact the equipment any.
Mounting the surround speakers may be your biggest challenge - since you have an open area to the right, and the doors to the left. Do you have a plan for that? It is good that you have some room between the back seats and the rear wall for the rear speakers - and any theater that has a "bar area" gets major bonus points in my book!
Oh, and to your comment about cables and a universal remote - get cables from monoprice.com
. Their HDMI cables are excellent and inexpensive (even the 25 footer that you'll need to run to the projector). They also carry in-wall rated speaker wire at very good prices. As for a remote - a good Harmony
remote that will serve you well should run less than $200 (though you could go higher for more bells and whistles).