Like you I'm hunting a sub 3 time, at the Manchester Marathon. Not quite as exotic as Paris, but hey, c'est la vie!
Hope the snow hasn't put paid to too much of your running over the last week or so. I find bits of my legs ache that don't usually, due to making more effort to keep balanced. Best of luck with the rest of it - I'm using some bits of the training plan you're using, very similar to the one I'm following. I notice there's quite a bit of varied speedwork, which is interesting - I like the fact that it's not just about grinding out loads of miles.
I've had medial knee aches, pains, and joint grinding for nearly a year now, and can train normally if I take anti-inflammatories. I'm adjusting my running form which also seems to be helping but would like to be medication free in the near future. Anyone else out there got back into running when their knees initially said, "Nah?"