Not sure of the turbo yet.
I was thinking about an APS setup but I havent looked into that side too much yet. My power goal is 400kw, it might be out of reach but I'm using a nicely modded GTR as my ref.
Yeah the motec is the best option. I don't have emissions testing but as you said the wiring is going to be a bitch. So cutting that down is the main goal there.
The budget will become a problem if I can strengthen the block enough =), simple too many options then.