Hey ph0n33z:
Good to see you over here and at CQC from the AVSForum. Your situation reminds me of where I was 3 years ago as the addition to our home was starting. I knew I wanted to add a HT, and I had permission from the wife to do so, but the construction was taking SO AGONIZINGLY LONG. So I filled the time by becoming an expert on wiring, HT, and audio. When the time finally came to run wire, I was confident enough to do it myself. But, like I said at AVS, I'd work with a pro if I were tackling an entire house.
You have a big advantage b/c you're thinking about how to integrate all of these systems now, before the framing is done. You should be able to design a wholly-integrated system and prepare the house properly for it from the beginning -- and not have to rely on kludgy retrofit solutions like I did.
Definitely do share your experiences as you go!
- Ken