1. Yes.
2. Yes.
3. I can't be of much help there. Usually the guys square the hat with about 50's and then do the ports about high 30's. All I know on that is what I have seen guys run but I have little experience in running port nozzles and high blower percentages.
4. I think either barrel valve will flow enough. But I would run all this by Enderle to be sure.
5. I don't know. I would just run a mag and forget about alternators or special batterys.