I am in the same boat, still building and building will get my 4*60 in the air some day. Test, what did the finished product weigh in at? I plan to use a Saito 72 in mine and wonder if this will be enough power. I reinforced the aft fuse via diagonal bracing and sheeted the turtle deck. I also added aileron hinges to the otbd three bays in-case I need more roll rate. Hopefully the 72 will pull it...
-Tom