I fly my Aeron with the CG 1/8" behind the spar. Remember that the spar has been moved back into the wing in the design for various reasons, so don't set it up like the other Fun-Flys out on the market, you'll have a Hand-Full to say the very least!
Servos in the Tail -
NOOOOOOOOOO!!!! That is a great way to ruin the flight characteristics of this aircraft.
Kevin