I agree with Roby. If you are comfortable with dope, then i suggest that is what you use on this project. You have a lot of time, effort and money invested in to this plane and not one to experiment with. Obviously there are a lot of good paint systems out there. Do some experimenting on an old wing or make up some sort of partial wing or fuse or what ever and do your testing and find what you like and what works best for you. My 2 cents.