WC,
Hello and welcome to the forum.
I really like your idea and hope to see it happen. Getting started on that journey will depend on where you are at in the hobby. Have you any experience in building or flying? In the Navy I've accumulated thousands of flight hours yet when my son bought me my first RC plane, flying it was an entirely different thing. Many pilot's testify the same thing. Nevertheless, I do understand the desire to build "your plane" and would like to see you get there.
Recently one of our community members successfully built and flew a C-17 so there certainly is a precedent and model to follow.
Again, welcome.
—Jim