Yeah, that's one of the main reasons I bagged out on DMD this year. No way I could do DMD the week after the 600. There just wouldn't be anything left in the tank.

You don't have to do everything in one year. At least that's what I am coming to believe. Any of the following are fine accomplishments on their own: a brevet series, the stage race, 3 - 5 doubles, Death Ride, PBP or the 508. No reason you have to do it all. I certainly wouldn't try, fitness uncertainty aside. I like spending time with my family too much!