I'm pretty sure a compact crank will fit, so you're doing the math for a 39x29 vs. 34x29 (or 30x29, if you opted for a triple of some sort). So that's what, 35.5" vs. 30.9" vs. 27.3"....getting pretty low there.
Technique-wise, climbing in the saddle is more efficient than climbing out of the saddle, but, out of the saddle generates more power (you just get tired sooner that's all). Maybe on the lesser hills you can practice some climbing intervals to build up your climbing stamina like Michael suggested.
Technique-wise, climbing in the saddle is more efficient than climbing out of the saddle, but, out of the saddle generates more power (you just get tired sooner that's all). Maybe on the lesser hills you can practice some climbing intervals to build up your climbing stamina like Michael suggested.