Otari and surroundings

I just got the beginner box for my group (I'm an experienced GM and the group consists of young teens with neurodivergence) and the box looks like a perfect fit for us, and I plan to continue with the Troubles book and possibly the Abomination book as well.

Does anyone know if it's worth to get the flip-mat and if the books will get reprinted to ORC?

I also would like to get any ideas for adventure books fitting for a group of younger players if you have any!