I'm around the same height and weight. I've also had some knee problems as well as was told to try running on a slight incline as to help with the pressure. Also, to add quads as a focus point to weight training is a must. The stronger our quads it helps the knee. In addition to consider wrapping the knee to keep it stable, which I believe you mentioned. Also, I was told running outside on the cement is bad because on a treadmill at least there is rubber and bounce back. Maybe power walk it works and kids can join you. However, this is for me - you could consider asking a certified personal trainer, physical therapist, sports trainer / coach and an Orthopedic / Joint Specialist that your primary care can refer to you. Good luck as we support each other. You rock!
