I definitely agree that the pacing seemed off. I always wonder if it's just me being so nervous/excited about what is going to happen that I can't really enjoy the movie as much the first time as I do afterwards. I did feel like the pacing was better the second and third times, but the scenes you pointed out also stood out to me as unnecessary and weird. I remember mentioning to a friend that it felt like this was a cut with deleted scenes added in.

I assumed the thing with EDITH was he wasn't taking his own control away by transferring it to Mysterio - I thought at first he was completely transferring it over, but then assumed later that it was probably something like adding a profile.