Thanks!
Amongst other concerns in this unchartered territory (for me), a new one cropped up recently while talking with an engineer - that being the full flying surfaces pivoting at the 1/2 chord and the resultant load on the servos...
Granted it would be a compromise in the autorotation mode but if they pivoted at the 1/4 chord, I'd have had the benefit of self-fairing due to relative wind. The way I have it now (pivoting at mid-chord) I'm thinking of it being sorta' like trying to carry a 4 x 8 sheet of plywood on your head against a 30 knot head wind.
I was trying to come up with a fix - either aerodynamic or mechanical (like a return spring) but weight, complexity, and laziness all come in to play here... so my plan to forge ahead even if it becomes a pitiful failure.