You're welcome. You could use a wide-range 14-17-21-26-34 freewheel, and the 52-47 would give you nice half-steps and smooth out the big jumps. You'd have more half-steps between the 47 and the 42. Of course, you'd only have a 42-34 low. What's that, something like 35 inches? I don't have a gear chart in front of me. That's too high for an old guy like me who lives in the midst of long steep hills with unpaved roads. But you're young and strong, right?