Lamontaine
Here I am with my words of wisdom (snort).
With your race 11 weeks away you have time on your side. Hoorah!
I am a strong advocate of doing what you enjoy.
While a plan can be a great way to achieve a certain goal, and take away the thinking, it can become a millstone if you're someone who unravels if you can't follow the plan. Whether that be due to illness, other priorities, or just losing your mojo for a bit. If you're going to be really tough on yourself and convince yourself of failure then following a plan as just a guide or just not bothering at all can really free you up.
Most plans have at least 4 days of running. I have run most of my races on 3 a week. I know I can do 3. Sometimes I can do 4, but if my base is 3 then I pretty much always achieve that, and 4 is a bonus.
It really depends on how much time you have. I do other stuff as well, which is good for me time wise, physically (less stress on the joints) and mentally (I've got a whole different set of friends who swim and who do strength classes).
Broadly speaking, mixing it up is most beneficial, and I think most of us in this group have got that nailed - a short, faster pace run, some sort of intervals/hill and then the long run.
When I'm planning for a race and want a plan I decide on a 10 or 8 week one (depending on the length of race and my current long run distance) then just google about until I find one I like. I increase 1 mile a week on my long run, and with a half I don't train to 13, but 12. Many plans have you train over 13 and that's fine. For me I know the recovery from a 15 miler would impede what I did the following week.
I admit I am rubbish at slowing down my long run, but I don't care, it feels good and that's what most important for me.