I am thinking of building a touring bike this winter for use next spring and summer. What kind of gearing should I use? I am planning on going with seven speed because it is cheap and the rear wheels have low dish. If I use a 27-inch wheels, a 14-32 cassette, and a 44/32/22 crankset, then my gears, in inches, will range from 19 to 85". Is this a good range for touring?