Let the rewrites begin!

I will be attempting to replace chapter 1 with a new chapter, but am not sure how successful I will be in moving it to the beginning. This one will not have major changes, just small additions (more of the lullabye and a mini scene with Alex's thoughts at the end)

I'm conflicted on whether I should replace all the chapters (to keep it in the updates list), edit rather than replace, or replace only the ones that have major changes. Please tell me what you think I should do.