I like that idea. I was thinking of dividing the fleet up into groups, like scouting groups, carrier groups, and of course the battleships. The groups would have to search for each other as they wander about trykng to make contact. Was the Zero and Wildcat not fully implemented in 1941?
Aircraft won't be factored in points-wise, all carriers will simply carry 1 fighter, 1 bomber, 1 torpedo bomber. For lower cap carriers, choose what you will, but nothing universal (no taking just fighters)
So I was thinking take the remaining points (in your case about 250) and build whatever you'd like out of 1941 stuff. Sidenote, you do not need to buy aircraft for the CVs, they will come stock with 1 of each.