The purpose of a triple is to get more low gears to handle difficult climbs without sacrificing gears in the high range. Unless you live near Clermont, the biggest climb you're likely to encounter is a 60' bridge, so you really don't need the extra low gear a triple offers. But it won't hurt you either (beyond the extra weight it adds).

For us Florida riders, gearing is almost a "don't care". I have a road double (39/53) on my road bike, a single chainring (42) with 10 speed cassette on my CX bike, and I've seen one guy do our Sunday 20 MPH group ride on a fixed gear vintage track bike