I don't have much input, but you've certainly grabbed the cat by the horns.
If you want to keep taillights and what not I wouldn't just trash all the wiring, unless you're cool with re-running stuff from the front. Even for a completely non-streetable rig, brake lights are a good idea, and you'll run into the problem of it not wanting to get out of park without them (I think... this can be bypassed, but, why bother).
I would leave as much of the exhaust as I could without getting in the way of anything, unless you plan on getting something made for it.
If I were in your shoes, I would get a tube bender, or a friend with one.
Looking forward to this.