I've looked into rims from Summit and a couple other places, I found some reasonably priced rims... I still can't afford them right now (thanks to college tuition) but I should be able to pick up a set at some point.
As far as the gear ratios go, it has 2.73's in it right now, and fourth gear in my trans is 1:1, so it should be fine cruising. I also have a set of posi 4.10's that I want to put in eventually, when I have the money to make it into more of a drag truck, but that's a ways out....
