Its not that big actually...
30 Wings on transport planes
3 Wings of strategic bombers
11 Wings of tactical bombers
4 Wings of naval bombers
7 Wings of CAG (land based not on carriers)
4 Wings MR Fighters (I think )
5 Wings Interceptors (I think )
I have been constantly building 2 or 4 wings of transports, a single wing of two engine planes and a single one engine planes.
I think the last major outing of anything other than transport planes was during the invasion of Australia. After that they have all been sitting back in mainland Japan. I occasionally take the strategic bombers out to do some long range recon.
Since capturing the middle east fuel supplies are not really a worry. So I guess a more active role might be nice. For eventual war with Germany I suspect that I will need considerably more interceptor cover. Then I should be able to use strategic bombers to cut their supply lines and tactical bombers to soften up their attacking units and speed up battles. (Or at worst slow down loosing battles!)