I like 46/17 but I've never ridden fixed in such a flat area as Jacksonville looks on the mapping sites I've been looking at. In skimming over the gearing threads I saw recommendations for mid/upper 70s gearing for flat areas so figured I'd ask here.

With my tires 46/17 is 71.4 and 52/18 is 76.2

Seems like a little too big a jump.

I may be able to trade the 52 ring for a 48 or 50 ring at the Co-Op, which would be a smaller step and probably preferable.