Halfie, Maybe?

So it's happened.  I thought the 10K might be the end of it but, alas, here I am thinking of running another race.  I don't know if I actually will, but I need to pull the trigger and make a decision soon because the race I'm considering is on November 7, only 11 weeks away.  It's for a good cause (St. Jude's Children's Research Hospital) and it would definitely motivate me to get back on the workout bandwagon because let's be honest here - when I said "Sayonara" to the bar exam I also said "Adios" to my work out motivation, despite Hawaii being a mere two weeks away.  Should I run a half marathon?  Could I run a half marathon?  Either way, I need to decide soon.  I'm already a week behind in training and this Saturday has a 4-mile run on the schedule.  I haven't done a 4-mile run since May.  But it is tempting ...  What do you think?  Should I?  Could I?