There's a lot to answer here, so..
That's a nice kit. It goes together easily, I liked building her.
If you haven't yet bought the deck, you might rethink it. As you noted the deck is stained.
Measure 21 is correct at the Battle of the Coral Sea, which the model is patterned after.
The horizontals are Deck Blue 20-B and the verticals above the waterline are Navy Blue 5-N . There is not any Haze Gray 5-H or Ocean Gray 5-O.
Super simple, big blue ship.
At Coral Sea she was freshly painted and appears kind of shiny.
The aircraft are a little bit of a challenge. They were blue gray over light gray.
http://www.angelfire.com/dc/
These are not FS colors; that system was developed post-war.
If it's your first airbrush foray, I would suggest you try the AK Interactive US Navy Camouflages Part 1. It contains 5-N, 20-B, 5-H, 5-O, and the ship colors Sea Blue 5-S and 5-L Light Gray. Not the same as the aircraft colors, but those might look fine.
I didn't paint the model with these paints, as it was some years ago. But I'm trying them now on some other subjects.
They are acrylic, they work fine for me in my Badger 105 straight from the eye dropper bottle, and they are really nice and opaque.
You'll want to buy two sets- big blue ship.
The GMM set is a good choice.
Do post your progress!
Bill