Sith,
Your goal should be to get to 760, and I am doubtful your score will reach 800 for at least 5 years, but that shouldn't be a damper. At 760 you will be near locked in for the best interest rates if all your other factors are good. At 750 that isn't necessarily the case.
Here are some things you can do. Have one of your cards report a small balance between 1-3%, but PIF before the statement is due. If you do that you will maximize your utility points. Using your cards isn't bad as long as you pay before the statement date and then don't use the cards until after the statement date (expect on the card you want to report a balance).
You could break 740 with the proper utilization. Though I don't recommend taking on new accounts or loans you don't need....an auto loan or a store card in time may be of help to your score as well - but don't get them if you don't need them or won't use the store card.