Have you gained a lot of weight? It sounds like you are basically not training at all right now - just getting out and stretching your legs some and putting yourself in a position to start training.
Haven't gone back and checked his plans recently, but I am assuming Phase 1 emphasizes base, Phase 2 emphasizes running economy, Phase 3 is heavy on vo2max and Phase 4 is a peak phase.
If you are really interested in the longer term, I would focus heavily on base for 6-10 weeks, working in some strides and then some tempo efforts as you progress.
I would then keep Phase 2 relatively short - 3 weeks, 4 at the most.
I would try to make Phase 3 the longest phase - keep it going until 2-3 weeks out from your goal race in April.
Last 3 weeks would be time for Phase 4.
My thinking is that you are so far from your peak fitness right now that you need to re-establish strength in your connective tissue, but that you need to do that slowly to avoid injury. Easy distance will do that for you, and it will also allow for big jumps in fitness, especially once you start working in the tempo work once a week.
Phase 2 is less important for an experienced runner. You need just enough of it to bring you back to your old form, but it is kind of like riding a bike - it will come back quickly. You also get the benefit of making the pace of your vo2max work seem a little more manageable since you will have run faster than that pace before you jump back into Phase 3.
But Phase 3 is where you are going to go from having about 80%-85% of your fitness back to getting 95% of your fitness gains from the training cycle.
Phase 4 will just get your fresh. My thinking on keeping that limited is that you will simply be better served by putting in the heavy work of Phase 3 since you really will not have been at it for a very long time.