I would say that you will be at 760 in one year, not two, easily.
You are pretty much in a keep on, keepin' on mode. You don't even need to worry about util, unless you are two months or less out from applying. But it's a good habit to get in to only have one card reporting a tiny balance, and then paying it off before the due date, with the other 2 PIF'd.
One more card might help, or might not. I like the idea of three cards, since you have a car loan. That way, the car loan will report, plus one CC, which should make the scores happy. The most score damage is done within the first 3-6 months of getting a new card, and after 12 months, it doesn't report as new any more.
You have Citi and a BOA/FIA card, so you might look at either a Chase card or an AmEx. Either will grow with you, and AmEx should give you high scores right out of the gate. If you do get an AmEx, be sure to pay it off monthly, even if it's one of their credit cards (the Blues, etc.) The Blue might be your best bet, although if you expect to travel a lot, check out Blue Sky. Blue Cash isn't worth it, unless you run a gi-normous amount of cast through it. (We're talking $6500 in the first 6-7 months just to get an average of around 3% on it, and then you have to start all over again the next year.)
Keep the util under control, and as Sylviatob says, never ever be late. You're in great shape, and I'm deeply envious!
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007