Which gear ratio?

RustyRatRod said

With only a 25" tall tire, the 3.55 will be good. However, if you ever plan on going taller, the 3.73 or 3.91 would be better.

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We are planning on going bigger but need to swap the front spindles due to the front still having the lame 5 on 4 bolt pattern.

That being said 3.73 gears might be a good compromise? Also, would this be a night & day difference coming from 2.5x gears?