I don't think most people who don't have kids realize how difficult it is to just pick up and move across country so I wouldn't worry about other peoples opinions too much. Not a lot of people on here are in your shoes. I also think you are in THE best city since your goal is to stay local.
However, getting into med school isn't easy. It isn't you do x, y, & z = acceptance. Plenty of people get turned down at schools where their stats are above average. The
LizzyM score is just something made up, to give you a general idea of your competitiveness. It does not guarantee you anything, not even an interview. Also, I have in the neighborhood of 5,000 paid hours of clinical experience over 4 years, and I would never stop and say "ok that's enough, I've got plenty of experience now."
I think in general you have a good chance of getting into one of the 6 schools you plan to apply to, if you get a 31+ MCAT. I also think your reasons for applying to only those 6 schools is justified. All I'm saying is that you shouldn't be surprised when people think you are taking a risk. My sGPA is a 3.99 also but I wouldn't feel confident applying to only 6 schools.