Yeah, that's how I do it, too...divide it up into so many pages needed per day. Though I'm procrastinating (sort of..lol, rather relaxing) as it has been a long work week. I really don't want to share rough drafts, either. This is completely for me--that is the way I'm looking at it--if I happen to write slop, it's all fine, as long as I push towards something.
I'm thinking you just transfer your words to the Nanowrimo site when you want and the words are counted?