I would agree with this. Bipolar will also likely be a disqualifier. Be sure that is what you really want, and that you will qualify. As one who was booted out of the air force 30 years ago for being overweight at 145 pounds and 5'6", I know what it's like to be on the fat list and have to report and weigh in to a non-health care person in your own squadron. My limit was 131 pounds. I enlisted at 130 starving myself and having sat in the sauna several times the day and night before. I was also dehydrated because I didn't want any excess fluid - and I was 18 years old. They have changed the weight restrictions some. I think in the army now they block advancement in pay grades and promotions if you do not meet regulations in both fitness testing and weight. If you exceed weight, you get "taped", and somehow, based on your weight, height an size of your neck, they decide whether or not to pass you. And this is all done in public view of your fellow soldiers. You are just another piece of equipment to the drill sergeants.
If you are thinking about joining because it's a steady paycheck, there are easier ways to get a steady paycheck, as well as a larger one. If you want to serve, there are other ways to serve your country than sacrificing your other goals of health and weight restriction with the help of your band. I'm not trying to discourage you, but they may not want you with the band, but they won't want you fat either. And you can fix that and they may not want you with bipolar. I would hate to see you or any woman sign up voluntarily for regular berating because of weight issues. Life is short. Once you have that band removed, you might not be able to get it back if you decide you want it.
We are a military family. I'm the only one ever booted out because of weight. It's not all bad, but if you have trouble maintaining the weight standard, it's a really hard hill to climb. If you decide it is really what you want, I hope you succeed and wish you the best.