Your time from the CIM indicates to me that you are quite fast. It looks like you ran pretty much even for both halves of the race although I can only assume that your half marathon race pace would be much closer to 6 flat. If you want to do little more than build a base for the first months of the new year, I can't argue with that. The only point I was trying to stress, and forgive me if I get sidetracked, is that is important to remind your body what it feels like to run fast. While my suggestion of 10-20% slower than 1/2 pace may not be conventional, it certainly won't get in the way of your ultimate goal of a substantial base while keeping your form and stride sharp at the same time. Using the new revised definition of the S in LSD (steady rather than slow), I think we all do an amount of LSD running as it is at the heart of building a base. An extended period of that, and nothing but, I believe could harm the strength and endurance that you built in the previous year.
I will have to admit that I am not at all familiar with Lydiard, even though he is often mentioned in this forum.
Personally, I have always had a hard time regaining focus after an extended rest period. I'm sure there is a balance there, I just haven't found it yet. I took my week off after the CIM, but I am trying to get my mileage back up as quickly as possible. We'll see how it works out. It does seem like you have a pretty good handle on what works for you. Best of luck on the new distance!