sorry for replying to myself, miscounted channels

I think 7 channels is enough

elev - 2
rudder - 1
alieron - 1 (reverse Y ) ?
flaps - 1 ( reverse Y ) ?
throttle - 1
gear - 1

previously on a ultra stick with a quad flap set-up I was using 2 channels for flaps and 2 for alierons,