Choosing a plot is going to be harder than I thought

So I have about ten pages of plots that I printed out for NaNoWriMo that starts in, oh a week! And I haven't decided. They all sound interesting and sometimes I think I'll just try one and if I get stuck I'll scrap and try a different one. But I think if I want to succeed at this, I need to commit to one idea. I don't know, I guess I'm just nervous. I really want to do well.
But hey, if I don't do it in November I can always do it another month right? I don't have to wait until November again.
Okay, I can do this. One week.
And then 30 days of literary abandon...