You can also have the bombardment TF set to "Remain On Station" and then change them back to bombardment again for the next turn. I do this sometimes because they do not always use almost all of their ammo when they otherwise would. They will try to keep a couple of loads for enemy ships. The reason for the "No Escorts Bombard" is to save their ammo for anti-aircraft fire. Evven DDs on a bombardment mission with no obvious damage to the enemy units or facilities is useful.
Keep at least one unit on the ground bombarding the enemy, if not all of them. This will keep the enemies fatigue and disruption up so they will not have a chance for a beer.
You can also use Fast Transports for your Japanese cruisers and destroyers and carry units and/or supplies. You could even use these to take bases like Buna if they are relatively undefended. Then they become Surface Combat Task Forces with a full load of ammo.
Try to keep your air strikes going in at the same altitude otherwise they may not coordinate. Think of Torpedo 8 at Midway attacking with such a great fighter escort!
If you set your dive bombers to attack at 15k [:-] feet, they will probably level bomb.
The enemy CAP, especially if they have radar, will usually be able to climb above your attacking forces then dive. This is because the escorts are staying with the bombers as well as the warning of the raid with the RADAR seeing the raid coming in. With enough warning, the enemy CAP can also be augmented by additional fighters that take off from the carriers.
Try using the Claudes at 5k or 6k feet, both as anti-torpedo plane CAP as well as anti-search plane CAP. In the grand campaign, I do this in the DEI against the Commonwealth biplane torpedo planes with good results.
I have seen 18 and 25 pounders shooting at the invasion force, the 40mm Bofors is especially good at that!
Try two or three DDs on a surface mission with aggression set to "LOW." Especially on those dark and/or stormy nights, this way they can get close and launch torpedoes, then leave. If the enemy has non-surface combat ships there, those could be hurting. Think if you did this and torpedoed an enemy carrier so it could not launch aircraft the next day when each side launches airstrikes against each other.[X(] Lead with DDs like this, then have your heavier ships come in next.
You could also break up your Betty unit into smaller sizes and have one section at night set to bomb PM as well as Naval Search.