funny? or just funny?

I've got so much of my new book's plot and characters figured out, I'm really excited! But one thing I still haven't resolved is The Level of Humour. So I'm reading and watching comedies (and romantic comedies) right now to figure it out. Maybe in November I'll just have to plunge into Nanowrimo, write up 50 000 rough words of rough copy, and see what level of humour it achieves. And then decide if it's funny enough, or if I need to ramp it up.