JJ doesn’t strike me as the kinda guy who’d put out a movie that length, but I’d be totally okay with it too (if warranted).
Not to go off topic, but I did see Avengers: Endgame this weekend. Kevin Feige said that it has the perfect runtime, and I can say that he’s absolutely right. I believe The Rise of Skywalker will have the best runtime. Some movies work best long, some work best short. The Last Jedi was two and a half hours long. Personally, I thought it worked, but she may disagree saying that it could’ve been shorter. Plus, when I make my own fan edits, runtime is usually the last element I think of in the creative process.