NaNoWriMo or NoNoWriMo?

I’m debating whether to participate in National Novel Writing Month. I’ve never done it, although I did do the short-lived Screenplay In A Month. The idea is to write a 50,000-word novel during the month of November. It’s a pretty short novel, but the emphasis is simply on completing it, not on quality. That works out to nearly 1,700 words a day, a fair chunk of time. Part of me wants to do it simply to have the experience. I’ve been working on and off on a novel, in between screenplays, and it would be nice to pour some effort into book writing again. I’d have to work on an entirely new one, per the rules, but I do have a basic idea and a month to work on an outline. On the other hand, I don’t know what the horror script production schedule might be like. I don’t want to start something I would have to strain myself to finish because of other obligations. I have a month before the contest with myself starts, but I’d like to choose sooner rather than later and dedicate myself to the project or to something else.