Re: how to handle timing:
You handle it however you want to. Part of timing is luck, so maybe Morrus' WOIN system (which contains a LUK attribute) would work better for that.
Otherwise, part of timing is Intuition, so maybe Wisdom has some input.
However, maybe it's Charisma, or even lack-of-Charisma: the gods of fate feel sorry for you, so they cut you some slack. (I once drove over a piece of coastal highway just before a landslide took my travel lane down toward the Pacific Ocean. I may have been the last vehicle safely over that stretch of road. That was wonderful timing, but hardly "expert timing," because there was nothing "expert" about it: I simply drove as I normally do. I didn't see it slide, but I wasn't looking in my rear-view mirror frequently: I tend to reserve that for times when I know there are other cars following me; and I didn't, then.)
(However, that didn't stop my older brother from jokingly blaming me for having caused it, either.)