I'd go 6/2, scout, 2 AA, 2 gunner.

But that's just me. I find that the longer I OH, the longer I can make attack runs.

For SY, 5/2, same other slots as above.

Unless you have uber repairers (and I mean extremely vetted), don't get a second scout for
SY.

The safest setup for SY is:

1 BO
2 Gunners
2 DP gunners classed after lvl80
3 Repairers
4 Engineers
1 Scout

As for Amagi, you can either add a repairer, an engineer, or scout. From my experience
with Amagi, one more repairer does a lot of good in GBs--guaranteed--while depending on
your preference (whether you want to OH at 39 longer or repair faster), you can choose to
have an additional repairer or engineer. The 2 scout setup for Amagi is really only good
during BB 1v1s when you want zero downtime between scouts.

Personally, I'd choose a 4/4 Repairer/Engineer setup for Amagi, but that's just me.

Edit:

Don't ever bother with seaman, restorer, or medic. Waste of space.

Or a 2nd scout.

as he said.

also you might want to think of another engy for Amagi (5 engy 3 rep 2 AA 1 scout)

5 Ng, 2 rep, 1 scout, 2 dp, 2 gunner.
4 Ng, 3 rep, 1 scout, 2 dp, 2 gunner.

You'll need an additional crewmen for the Amagi.