I'd be careful with signing up for more races until you know how you recover.
I've always had a few months between HMs. I'm running my second full marathon in September, which will be exactly 16 weeks after my first full. Just now getting back up to marathon training after 4 weeks of recovery running, it's actually harder than I thought it would be! I figured I have trained smart and strong for the first marathon, I'd just ride on those coattails for the second. I didn't factor in the toll the first marathon would take, so it really isn't like you train up to a certain distance and then your are golden to keep running it, if that makes any sense. The race itself, and subsequent recovery, do knock you back down a few rungs on the training ladder (at least for me).
At any rate, listen to your body and have fun! I love RnR events, my upcoming marathon will be my third RnR race.
Edited by: SCHOOLNURSE86 at: 7/9/2012 (10:17)
"I just felt like running." Forrest Gump