How about we make a new thread for the pre-Junon part and see exactly how many people are taking part? As I said, I think the timetable there should be relatively quick, so we don't waste too much time catching up to the rest of you.
Actually, it would be good to have a target for how long each chapter will take, as the previous playalong had gaps of four, five, seven, eight and finally 31 days between chapters.
I was going to suggest one chapter per week, but then I realised that it would take us until the end of the year to finish it, and I doubt many people have the patience for that. So how about two per week? They could start on Monday and Friday, creating "weekend" and "weekday" chapters, with a bit more time to complete the weekday chapters as people are likely to be working/studying/otherwise busy.