Dag,why you want to run with such a strong stability margin? Running with that much stability margin means that with even a 25% CG location you're going to have a very strong nose up pitching tendency due to speed changes one trimmed for hands offin level flight.

You wrote in your first post that "NP on CMAC = 0.4956". Am I correct in reading this as the Neutral Point is at 49.56% of the MAC? Or what is the C in "CMAC"? Or did you mean the Neutral point is at 49.56% of the root chord? Which, for a swept leading edge such as an Edge design would be about right.. If I interpreted your statement correctly and the NP is located at 49.56% of the root chord then you're going to want to aim at moving your CG back to around 45% or maybe even closer to the NP in order to achieve a better 0-0-0 thrust to wing to tail alignment in flight where you only require a smidge of down when inverted.