It would seem to me you have a somewhat unique opportunity John. Before you get committed to a singular notion I would think you'd want to plan to go to the LARS on father's day weekend and hook up with Don and his gang. I'm sure you'd be able to wrangle a drive in one or more of their cars to get a feel for all or most of the things that will affect your enjoyment.............move to reality rather than speculation. We all make compromises to enjoy these toys, the question becomes which compromises are you as an individual most comfortable with. You may end up in the same place as you are today, or you may experience some factors that will motivate you to make some changes that enhance the experience. These are "customs" in the sense they can be tailored to suit, easier done in the initial build than in retrofit most often.