this is what I tell people that want to know how long to build an airplane. Two questions, are you a perfectionist, do you have no mechanical skills. If it's yes to both, than with a slow build I guess it will be 10 years. On a quick build, you might be able to take out 2 years from that. If you only have one of those two than I would say about 7 years and than cut off about 1.5 years for quick build.