My husband and I live a semi-retired life now (he is FT SAHD and I don't work many hours). Because of this we're at least 10 yrs away from FI, but have awesome lives now. And I totally think it's worth it. My big suggestion is that side gigs, if used efficiently, can allow you to keep a low stress base-work schedule, significantly add to the stache, but allow one to maintain flexibility and autonomy.
So, for example, I have a super autonomous and flexible schedule that requires minimal working hours for my regular job, but the downside is that I only make about $50k from this regular employment. To supplement this, I have been able to make about an additional $10k this year by picking up side work. This side work is mostly output-based, does not require many additional hours, and I can choose to pick up more or less based on what's going on, but it goes straight into our 401k (meaning that it is super helpful for the stache). At first, I was concerned about finding side-gigs (esp that I enjoy), but since I started trying, I find that it's not hard at all and they are pretty much falling in my lap. Most of my side-gigs are related to my regular career-related expertise, but last year I also made $2k, tax-free, just from credit card churning alone (as an example of something almost anyone can do).
I find having a super relaxed $50k job and picking up $10k of side-work when I want, works much better than having a $60k job that is less flexible.
Similarly, dh is a FT SAHD. When DD goes to school FT, he has a plan for picking up his own side work. This way we can build our stache, but retain flexibility (eg., don't have to worry about him getting time off to plan trips, one of the two of us will be at home with her after school each day, but we should still be mad-staching between our side-gigs).
So, to OP: my suggestion is to perhaps choose the more relaxed regular work schedule and to look for sidework to only do when you want and it's not a burden, but that helps to cut your FI time. Eg., you mentioned your wife is a teacher. Could she grade for IB during the summer/over xmas break? If she has a Master's, is she in a field that she could pickup any CC teaching, online college teaching, or even tutoring? If you both can keep the time spent at your regular day jobs to few enough hours and efficient enough so that you could each pick up a little side work, perhaps you can keep high flexibility and autonomy, while still racing towards FI.