That's a great idea for a training program Eags. Gives you something to aim for and some variety. And at the end of the 12 weeks you can look back a say "Wow, look what I just achieved".
It seems I'm paying for the effort at the Kokoda Challenge now. A week and a half on crutches and pain killers for a stress fracture in the right ankle hasn't been much fun. Oh well, I should be back on 2 feet by the end of the week.
Probably won't be doing any running for a couple weeks. Might have to dust off the Pilates ball to try and stay in shape.