That's an amazing project FF, if you are serious! What plane?
Very serious, it's long been an ambition for all sorts of reasons. It'll also hopefully raise a fair amount for charity.
The plane is a turbocharged and de-iced Centurion, chosen because of it's speed, load-carrying ability and the fact that there's an STC for just about everything you can think of ... and the view's better under a high wing, and if there was ever an occasion for wanting a good view .... !
FF