You might want to spend a couple days using your DD to level up another couple
supports to mid-20's, or a couple arm sailors, that can be used for torping or
changed to AA gunners for later ships.

If you level guys from scratch in a CL, when your higher level guys are getting 500+
XP, your new guys will get 100 or less, and end up 10 levels back when your BO hits
50.

u need 8 sailors on board for Atlanta.

(1) BO
(2) Arm-sailors / Gunners for R Space
(2) (any type of sailors) depends what u want to,
- if AA - then put AA gunner, but Atlanta is not good for AA in T space,
- most of the players will do Torpedo, so can put Support sailors or arm sailors
or special force
(3) Support Slot.
Since there is no scouters on Atlanta, on basically u don;t need the scouters, but
for the future use, u need 1 on board to up lv the scouter. Moreover, u also need
some support sailors type for future (Engineer, Repairer, Restorer), manybe seaman
too.

1) so as the sailor that u have, u can put all on board, except the Radio man put in
the red circle at the left bottom side.

2) If u like to create Fleet or SQ in future, then u need to put the Radioman on board
to get exp to up lv.

For the gunner type, I have no suggestion for you, because it depends how u like to
play in game. If u like to reduce the reload time, goes to RND type, but accurate is
lower. If u like to be accurate, goes to ACC type, but reload time will the same as
the gun that required.