I would try to avoid "over-thinking" the problem. The 2014 goal sounds to me like it is a *major* project for you, a big deal, something that you are going to spend a lot of time on in the next 6 months or so. It's not as though you are going to *forget* to work on it completely. After all, one of the key goals of GTD is to capture tasks so that you do not lose track of them.
Call it an area of focus and create the sub-projects, as you have said. Do your project planning, and add your NAs as you go. And you're done (with the guts of the GTD portion of the exercise, anyway).
Put your efforts into accomplishing the NAs, not struggling with exactly how and where to "bin" the overall "parent" super-project. It's at the lower levels that your efforts will make the most impact on your success.
I hope this helps.