I certainly hope to do the tasks this month; despite my low LD count, I've managed it both in October and November Making it snow was actually one of my suggestions in the TOTM club, but I realized after the fact that it was already one of last year's tasks (teach me to research before I post next time ...)
Definitely go for them! I think having to do tasks really makes a difference both for ld quantity and quality. If there's something you want to do in an ld, you are really motivated and may try harder. They also help you keep focus during the dream, so you are less likely to lose lucidity or even stability.

Awesome journalling! That memory of yours is really great. Indeed, it might help to go back to previous dreams and think about them whenever you have the time. I think that with your memory, there will come a point where you will begin thinking during the dream "this reminds me of a similar situation in a dream" and then ld!