Problem with limiting it to AAF on one, and USN/MC on the other is that the Rabaul assault was heavily coordinated. USMC escorting USAAF bombers, etc.
Updated, with possible restrictions indicated:
US
F6F-5 (30 Max, CV only)
F4U-1A (25 Max, Bougainville only)
P-38J (25 Max, all land bases)
P-39Q (20 minimum, all land bases)
P-40E (20 minimum, all land bases)
SBD-5 (20 Minimum, Bougainville and CV)
TBM-3 (20 Minimum, Bougainville and CV)
B-25C (20 Minimum, no formations, all land bases)
B-25H (10 Maximum, all land bases)
B-24J (10 Maximum, no formations, all land bases)
PT Boat (Optional, no second life, 10 Maximum)
Japan
A6M5 (no restrictions)
Ki-61 (no restrictions)
D3A (second life in fighters)
B5N (second life in fighters)
Balance: 60/40 in favor of Axis
Special Optional Mission: "Black Sheep One," as in the original write-up.