RE: Bi-plane as second plane?
I'm a kit builder and a flyer..to give some perspective...before I built my first Goldberg Ultimate biplane I had already built numerous control line models (some with full fuselages), a Midwest Aerostar, a GP Ugly stick, a Goldberg Electra, and a GP Ultra Sport .40
After this, I was ready for the Ultimate both building and flying. Now I've got two of them.