Time to Start Training

So I'm putting this out here, that way there is no backing out!! I have decided to run my 2nd 1/2 marathon on May 5 for the Capital City 1/2 in Columbus, OH (I would do the full, but they only have a 1/2 on this one) and then I'm going to run my 1st full marathon in Oct at the Columbus Marathon.  So here are some of my training ideas.  I found a 12 week pre-training training program by Hal Higdon's (I used his 12 week 1/2 training for my 1st 1/2).  I plan on doing this only because I'm trying to get to 8 min mile, so I'm dropping my mileage down right now in order to get faster and then I'm going to mix in some tempo runs.  After that 12 week training I'm going to jump right into the 12 week 1/2 training program.  The 1/2 is in May so I will have almost 5 months to train for the full and I will already have a high base mileage to start training for the full.  The question is, do I have enough time to train properly working full time and having a child.  I know it's going to be time consuming, but it's something I want to do.....soooooooooooo wish me luck!!! I need to buy me a new pair of running shoes!!!

LET THE RUNNING BEGIN!!!!