Hey, cheers, and glad you're enjoying it.
I've not settled on the exact number of chapters yet, but you can expect season 2 to be more focused than season one, and concentrate mostly on delivering on promises made in season 1. How long it will take to make is hard to say, Season 1 took 5 years and by my reckoning well north of ten thousand hours of work to make, season 2, by its more focused nature, should take less, which isn't saying much I admit.