Comically Illegible

Rather than let the idea evaporate in the wind (as ideas are wont to do), I'm making a concerted effort to find time to make 'House Guest: The Graphic Novel' a reality. Indie publishing companies like Cafepress and Lulu would make distribution a breeze, and I can say that from experience. I've sold albums, merchandise and books through them in the past at no cost, and if the product is good, people do buy it. Of course, if the product is crap, then not so much. Hopefully the 'House Guest' book will fall into the former category.
The bulk of the book will, naturally, be the adaptation of the film itself. I've broken it down in an almost-indecipherable way:Believe it or not, those have proved very dependable in terms of laying out the comic. It comes to about 64 pages though, which in my opinion is a little skimpy. I think to graduate it from just a 'comic' to a 'graphic novel' it'd need to be 100 pages, minimum.
So I'm not quite sure what to do next. Do I have enough material to pad out 40 pages? I could possibly collect some roughs and concept art, or maybe even include another story ('Ground Running', being largely a visual film, would translate very easily into a comic). I guess time will tell.