Holy moly Awesome!! A 4.6?? And the guys here thought I was nuts!! Based on your post, you obviously have much knowlage on what your doing. I would prop that motor really hard for max torque, not speed. Plan on doing some reinforcing on the cabane mounting and wing struts. I used some 1/4 ply triangles and glass on the lower wing mounts in the fuse. You also may want to consider useing ball links on all the flying surfaces, instead of clevises. With that much power, I would definately can the ca hinges, and use a good quality giant scale hinge on all the surfaces. Although I didnt pin the hinges on this model, I do on super high performance models. My technique is to drill holes, and glue in toothpics. I then just cut them off close as possible, and machine the toothpics flush with the surface with a good sharp dremel cutter. A small square of monokote ironed in place, and you have a surface that wont pull out. BTW- Before i got into doing that, I had a few ailerons and elevater halves pull out, doing high speed power dives. No fun at all!!!