stay out of 5th gear if you want it above 60. I had 3.07's and 33 for a few years and 5th was only used going down hill.
If you want to change gears, and don't plan on going over the height of 33" tires, then 4.10 ratio will do you ok and still have good gas mileage. If you want power and don't care about gas mileage then switch to 4.56's.
I currently run 33's in the winter with 4.56 gears, and I have tons of power, I can start out in 2nd gear in most places, but gas mileage is a joke. in the summer I run 35" tires and my mileage is a little better.