I think it is important to note for OP that cards like the US airways MC, the AA cards, and the SPG amex dump points directly into your FF account. So cancelling the card does not mean you lose the points.

Cards like Amex MR and Chase UR can transfer to many airline and hotel partners, but if you cancel the card you lose any points you have yet to transfer.

This is an important piece of the puzzle. I know friends of mine feel pressured to use all their miles before the Annual Fee hits, and then I explain to them that they can cancel the card and not lose the miles. (The Chase United Explorer card is a good example of this).

PDX: Looks like you're on your way to some great trips, just make sure to post and ask for advice on redemptions here on FT. Redeeming is just as important as earning--if can get 2 trips out of the same amount of miles, you've in effect doubled your point total. PM with any questions, already far enough off topic :P