Best bang for your buck, pay off your credit cards. Ideally, all but one will report $0 (that means you pay them off before their statements drop), and that one card will just show a small balance, $10 - 20. This should help you most with your scores.
On the loan, just keep paying timely. Your mortgage lender will also look at your monthly obligations, though. This advice is strictly for scoring purposes.
* 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