"I hate trying to loose weight when I am training for strength and speed, I figured I'd spend the next 6 months getting my weight down to the good climbing range (2.5 lbs/in). Am I expecting too much?"
No, as stated dengdawg, by put a GU flask or a couple GU packs in you pocket and ride on. You can always work on extending your Z3 riding over the winter. Failure is what makes one's body stronger.