I've gotten this question a few times now - right now I have no solid projected number of chapters; I have SO much planned to happen in the series that I have no idea right now how many chapters it will take to tell it all!
I have no short term plans for a collected edition seeing as this series could be going on for a very long time - but it's definitely something I'll consider in the future! For right now, each chapter will be available as limited collector's sets.
Here's a secret: the spines of each collector's box for each chapter will create a mural when shelved together!!