Where to set timing with 9psi powerdyne

[nails79]

just finished installing the 9psi powerdyne kit, several snags along the way nothing major. i set the timing at 6* before installation as per the directions, just wondering where i should be setting it now. i know every car is different but is it safe to go to the 10-12* range? (not that i can see the timing pointer any more) motor is a 306, lunati cam, gt40 y heads ported, 42# inj, 80mm maf, 255lph pump, cobra intake, had the timing at 16* when in NA form. the car is also rich as all hell at idle, i have the fuel pressure set at 36# with vaccum off, plugs gapped at .034", also car takes about 5 minutes to idle strong and properly it wants to stall out. thanks for any help.