My vote is to keep it whatever length works for you to mention all the stuff you really loved in the month. Each month I read this list and alternate between nodding my head at the ones I've already read saying, yes this is a great one, and looking forward to coming back to read the others. I don't think I've ever been sorry to click on a Dillon's pick and read it so I'd hate to see you restrict yourself to any arbitrary number.

And thanks for including me, I confess I find myself asking sometimes when I write, will this be good enough to make Dillon's picks.