I think I've been happiest at work when I had a meaningful goal or purpose I was fulfilling, and busy. Good pay, low stress, and short hours sound great but I've always felt best doing something I felt passion* for, even if the hours were long, pay mediocre, or environment stressful.
I think you should pull the trigger, you are FI already.
*Of course, that passion inevitably dies because every job has its share of bullshit and nonsense people.