I'm on track to finish drawing chapter one about two years after I started (if you factor in some slack for really rough weeks where I didn't draw), resulting in 7 pages of prologue, and probably around 100 pages of chapter content.
I suspect chapter two will be a similar length, which will probably take me another two years, considering the rate at which I work.
I have rough plans for a minimum of 5 chapters.
...I'm tired just thinking about it.