I can't give you any direct advice, but I have two sports nutrition books that I think could be very helpful.
The first is Eat Smart, Play Hard : Customized Food Plans for All Your Sports and Fitness Pursuits by Liz Applegate, and the second is Nancy Clark's Sports Nutrition Guidebook, Third Edition by Nancy Clark. Both books include information about losing weight as well as eating to fuel your activities. And both authors are registered dieticians who are well known in the exercise world.
Information on Nancy Clark can be found at www.nancyclarkrd.com.
Information on Liz Applegate can be found at http://teaching.ucdavis.edu/nut10/applegate.htm.