I'm thinking about starting a split - I have been doing full body but as my rides get longer, the energy level dips. I had been hoping to keep as much upper body muscle as possible - knowing that endurance rides can chew into it (or so everybody says.)

I see you don't do regular squats, any reason? As I get older (ahem...) my lower back talks to me after heavy squats. I want to keep my lower back intact for powering up hills.

I like your lower body workout, though and am going to try it on my next leg day. I especially like the two hammie exercises. Cycling neglects the poor hammies.