OMG! Your plan rocks too! I am loving all these 'kids wings' I keep seeing, they are just sensational. Theatre room.....(salivating). Did you include your CAT 5 pre-wiring for surround sound? We didn't do it last build, and cost a bomb (and huge headaches) trying to wire it in after. Think it costs about $400-$500 to wire it in now vs later.
Is your build split-level given the fall of the site??
Cheers
AV