Hi Craig,
Man that should be one potent motor! The one thing you didn't mention(but probably alluded to by mentioning the price of wide-band O2 sensing) is A/F ratio. Since that's really the ONLY way you can safely dial in your combo, I'd log it. I bought a kit to build the needed widget from these guys. Check 'em out, they're down in your 'hood. Looking forward to meeting you when we trek. I'm gonna trailer this year but should still be a blast.
Mike Foss
FFR 1137
Tucson
http://www.techedge.com.au/vehicle/wbo2/default.htm