What I fear is that the storyline will fizzle out or stop after a while, like it did with Keenquest #1 (DANGIT! Where IS Douglas Adam's towel!?). In addition, I remember losing tracke of the plot or a similar Halloween event....
IF it's decided that the squential idea is used, be sure to have a definate end. Say, the tenth page is the last one.
In the meantime, sign me up. Sounds fun. Good that you're planning this still in September.