Dang, how did you get a compact (I have the same 2010 bike)?! I got tired of waiting (late last year) and the shop owner was able to get a triple, but I regret it. I never use the granny gears and I'm not all that happy with the shifting.

As far as pains...my butt is getting better for gradually increasing distances. I definitely had the sore neck thing for a while, but that's much better, too. I rode for an hour or so several times/week on the trainer all Winter. My first few longer rides in the Spring were not really "comfortable," but my comfort is definitely increasing as my miles increase.