I agree, go for it, but have a back-up plan in case it sells out before you can register.
I ran my first full last summer, by far one of the coolest 'personal best' moments of my life, outside of marriage and my children. I plan to do it again this fall, Lord willing :)!
I would add, though, that for me the training was more daunting than the race. Pick your plan carefully. This time I won't use a plan that has a 10 mile run scheduled for a Tuesday, for instance. I'm a wife, mom, school nurse...my week day runs need to be a little less time consuming.
Colfax HM 5/15/11 2:15:05
Donor Dash 5k 7/11
Denver R n R HM 10/9/11 2:11:12
Frosty's 10 mile 1/21/12: 1:39:00
Platte HM 4/15/12: 2:08 PR
San Diego RnR Full Marathon 6/3/12: 4:39:26
"I just felt like running." Forrest Gump mamamarathoner.blogspot.com/