R Verbael, several years ago when I had Early RC Models I drew up a 100 inch wingspan enlargement of the Sr Falcon I called the Master Falcon. Even went as far as drawing up the parts sheet for laser cutting. It was designed around the OS 120. I never had the time to build it. If you are interested I can send you the plans and the parts file for the Master Falcon. You could have your laser cutter cut the parts and get building quicker or use the parts sheet to cut the parts out. As I recall the orignal plans do not show all the bulkheads and such. I also modified the leading edge so you will not have to shape a 2x4 piece of balsa
If interested PM me your e-mail and I will ship plans. You can have them printed at you local Kinkos or such.
Bob Harris