You'll be okay. It's only the initial pull-away from a stop that will be really noticeable. I would leave it as it is for a time and see if you are going to be happy with the tire size and also figure out where you would like the revs to be. It's expensive to gear an axle, and 3.73s aren't the worst in the world, and the 4.0 is the best engine if you have to have bad gears. After a few months, then decide.