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I would go 4.56's if I was you, if you do mostly city you may actually gain a bit of mpg. I have never seen anyone on here regret putting in their 4.56's, but I can't say the same for the 4.11's.
Well let me ask you this, what's your mpg look like just driving normal back roads and hwy.
If you are going to only consider those two ratios use the 4.10's. Since you are lugging with those 3.55's you might even pick up a little better mpg with the 4.10's
If you have 4x4 the lowest you can go is 4.56. Nobody makes anything lower for the 8.25 front axle. I have 4.56 on factory 265/70-17 tires and they are great! Go with 4.56 and don't look back!! Never fear the gear!!