It aint rocket science, there are lots of fully rigged biplanes out there and I don't see anyone fooling with their turnbuckles to assemble their aircraft. Maybe you should attend some larger fly ins or a dawn patrol event somewhere and get there early on the first day and observe how guys are putting the models together and ask some questions. I have a half a dozen rigged biplanes from 1/6 to 1/3 scale and none take over 25 minutes to assemble. The rigging runs from quite scale to , well, not so much but none of them look bad or do they appear to be rigged with RC stock hardware.
Doc