Imo Wukong's origin story/'how he wrecked havoc in heaven' shouldn't be told here since this is technically a sequel to the original Journey to the West. The pages used could've been used for plot progression.
Well whatever, the art is a treat anyways ¯\_(ツ)_/¯
I personally think the flashbacks are interesting. They slowly reveal the history of the series - revealing character development throughout the years. I also think the chapters are long enough that fitting in multiple scenes per chap is doable. I'm biased though lol