It all depends on what you want to do in the end. More fighter, some of both
bombers or one type of bomber. Seaman depends some think they don't work
other do, medic can help if you are lossing or feel like you are lossing to many
experts. Some add gunners later, others add repair and restore saliors.

As for blitz to 61, I say no and I did it too as soon as I had an oyodo and
some fighter pilots at lvl 40. Run local fighters and take out scouts and
bombers in GB2 where the xp is much better, and you might even be able to
take down some t3 fighters too, just stay way from t4. But if you are short on
point/credits stay in blitz. Blitz isn't bad for a CVE or CV1 either.

If you need specifics you can go to just about any nations page with guides for
CV and they give about the same for crew make up. As for not waisting
money, there isn't a guide for that.

Well to know a good start you must think what sailors do you want to have in the
cv6? For example if you are going to be strictly a FW then you dont need to train any
bomber pilots.

As for me, the setup I want in my cv6 is 5 fighters, 2 torpedo bombers, 2 dive
bombers. That takes care of the support slots and for on board the cv a seaman and
a medic. Yes a medic even though with the cv patch you dont lose vets anymore but
he still cuts down on the expert deaths, and they cost money too! Japan dont have
medics themselves so you either have to buy one or start a KM line to level 25 to get
your own. The seaman gives a buff to all your pilots and to me there is no better use
of a on board ship slot that beefs up my fighter pilots.

So a good start I would include a min of 2 fighters and having 2 TB, 2DB adds alot
of flexability and options in battle. You never want to have to wait for your pilots to
come home before loading up that type of craft again. For example if a BB is
breaking through a battle line and you need/want to sink it with DB's, however you
know that one load will not be enough the job. You dont want to wait for your db
group to launch, fly to the bb, then return flight before finally reloading. You want to
have a 2nd Dive bomber pilot to be loading as soon as the first takes off. The time
difference could be minutes. A BB could do some serious damage given those
minutes.

If you go the Hosho line once you get the ryujo you can have 6 pilots (support
slots) and can put 2 more on board instead of guns in the T slots. I would put 2
extra fighter pilots in the T slots. It is very annoying having pilots of the same class
at different levels. For example you get Tier 3 fighters at level 75 but not all of your
fighter pilots are 75. So you either use the new/better T3's with fewer pilots or stay
in your inferior planes with all pilots.

P.S stay in blitz until 61. Going GB will get you eaten alive by the big cv's fighters.
Not to mention all the extra experience they have at being a cv over you.