Great progress dude! The front end does indeed look mint with everything in there.
I'm kinda torn on engine management as well, might combine project lambda with an FIC6. Although apparently an ecu can only take so many reflashes? Something to think about if considering lambda, you may want to find a backup ecu.
DIY: ProjectLambda Stock ECU Reflash Tuning (Master Reference Thread)
Either way, get something that can control fuel AND timing, at least. And you'll need a voltage clamp or something for the MAP cause it'll freak out the ecu when you hit positive manifold pressure.
...AEM FIC 6 controls fuel and timing, and has a voltage clamp. You'll need a couple 2.2-3kohm resistors tho...