The other approach is to just lose the 10 pounds first and then get fit. If you're looking at 2014 in terms of riding goals then taking 5 weeks off, losing 10 lbs (2 lbs a week is reasonable), then get riding. You'll have plenty of time to get fit for 2014.

Having said that I'm trying to lose weight and still ride. I was much more successful when I didn't ride but I also didn't have a choice - I was recovering from a fractured pelvis and couldn't ride for a few months. I lost massive amounts of weight and had my second best year ever, in 27 years of racing.