...It would be very interesting to me, and I believe to many others, to find out what your background is that gives you this capability of posting such responsive replies. It would also be interesting to find out if you also have practical experience in developing such systems...
I'm a Senior Test Engineer at a video processing technology company in the Silicon Valley (Anchor Bay - we make the DVDO brand video scalers). Previously, I installed commercial telecommunications infrastructure in the same area, and previously desktop support for a law firm out in Palo Alto (Wilson Sonsini Goodrich & Rosati - WSGR). Before that I installed Home Theaters, and before that car stereos (competition and show pieces). My night job(s) were running sound at a few clubs, and a small recording studio in Emeryville - and eventually front-house sound for a local S.F. Bay Area band "The Ones and Zeros" for about 3 years in the beginning of their carreer (they are still around - and they gave me the nickname "10-inch-Tim", don't ask...
I also had a breif stint as a Loss Prevention Officer for Fry's Electronics (big "Best Buy" competitor) during the "dot-com burst". I've been around the block a time or two.
I've done over 300 car stereo installations over the last 10 years (a few recently), and have have some experience restoring cars ('73 vintage and older). For home theaters, I've done low and high-voltage electrical for audio and video distribution, climate control, and lighting control in over another 100 installs (including a few jobs that were over $500K).
I've designed a few stand alone power systems for a few cabins (renewable/non-renewable off grid power), and desinged several PCBs for requested tasks (for friends-colleges).
I just generally enjoy electronics and engineering. All this, and I'm only turning 27 in a few days
My bus is just another outlet for my restless mind (and while it's too cold/wet to work on that I lurk around here and BNO's bbs).
P.S. From my install days (both Home Theater and Car Audio) I can make one more recommendation: design three electrical systems. The first is to be designed based on what you'll only need as the bare minimum to sustain your intended use pattern. The second should include the maximum "luxury" you would dare dream to cram into a bus (or car or home). The final should be a happy medium (leaning towards the maximum you can afford), between what you've designed in the first two. Things will change later, so make things easy to chage (and add a little margin). Don't make one system heavily reliant on any other system - this will require more work if you make a change later (my old boss for commercial telecom gave me a good nugget for this one: "If you have to do it twice, you didn't do it right the first time - and you won't be making any money on it") -Tim