Don't worry. While Maverick's captain may have threatened him with cargo plane duty, no such penalty awaits you if you make a mistake while using CAP and by the time you've finished this essay you should be well on your way to using CAP as one of the tools for victory in AAPacific.
Remember, first and foremost, that although purchase units, combat move, combat, and noncombat are nominally different steps, they are really very connected. If you anticipate that your combat moves, combat results, and noncombat moves are going to, say, result in a severe lack of force in the east in the next three turns, you should probably build some infantry to march east to make up for that lack. (Or you may decide to abandon the east).
2007 Origins International Game Expo
July 5-8, 2007
Greater Columbus Convention Center