Well done on the weight loss, amazing work.
I aim to do one 5k every week. Doesn't have to be fast, I aim for 30 mins. When I first started running I was only doing about a mile at a time and built it up from there. Good trainers are a must (highly recommend Brooks).
If you're not doing it already I highly recommend dumbells. They are so simple to use and there are loads of different exercises. You will also see noticeable improvement over time. I started on 10kg dumbells and am now on 25kgs after about 18 months doing them once or twice a week.
As I've got older I've realised that it's best not to overdo it. Set a goal that's achievable and take your time doing it