Guys,
Thanks for all the help so far, after a good night's rest and reading all your posts, here's what i figure:
-Buy the E-manage.
-As per your suggestions, plumb a Wideband into it.
-Tinker with the fueling a bit to see how much extra juice I can get out of my setup.
-Later on, if i decide to go single, buy and install all my parts in advance, then go to the pharmacy to shop for IanC
I know working with a VVT supra out here is a challenge, but hey, it's all worth it when i get behind the wheel. And besides, thus far, I found a solution to any problem I've had on this site ... so hey ... I'm sure this e-manage thing will be no different.