My problem is that if I get in a gear where I can spin, I'm going like, 10 mph. If I want to make any kind of time at all over the _x_ number of miles I plan to ride, I have to pick a higher gear and slower cadence. But not too high or I also slow down. Unfortunately I don't know what that cadence *is* yet.
I'll know a lot more when I slap a cadence monitor on there this week. Always refining the journey...