Your Support crew should be 5x engies 3x reps 1x scout or 6x engies 2x reps 1x scout

I agree with Umbral; use the T-slots for AA. I ran four engineers and scout in support
slots, filling what ever support slots remained with repairers as I progressed through the
BB tree.

For the any BB56, you'll want 1-2 scouts, and a mix of repairers and engineers. Often,
this is somewhat engineer heavy (eg: 5 eng, 3 rep). For KM, T-slots really should be used
for AA, so you'll be limited in your repairers.

from what i've seen you should have 0 restorers (at higher levels you already have
maxxed your SD), 2 rep in the T slots and apart from the 1 rookie pilot to fly your
scout planes, the rest of your supports should be engineers for that all important
speed boost.

i'm sure people will correct me if i'm wrong however.