That is a very nice and robust plane for windy days
There is no secret set up for heavy Aspire. Just do not have the CG too far back since the you will most propably fly the plane in turbulent and tricky conditions when handling is everything.
CG at 114-115mm is a good starting point. Adjust towhook position so that you do not any elevator compensation in launch. When in thermal or floating mode, you might want to use little more camber than in lightweight plane. Ok?