Best of luck for the half-marathon training. I reckon you've made a great decision to start thinking about it early - you've got plenty of time to get training in.
I did the BUPA Great Winter 5k last weekend - there were all shapes, sizes and speeds there.. Some were flying up the route, and others were walking the first 1k. I picked out a few guys and raced them, really enjoyed the race and pushed myself harder to catch these guys.
If you feel like a bit of healthy competition would help you to enjoy training, why don't you book yourself in for some 5k, then 10k races for march/april to give you something smaller to look forward to and break up your overall training.