My own age is right on your heels, so I'm always interested in losing more belly fat. From what I understand, exercise has no effect on that, especially at our age. However, since your arms are strong, you might try planking to strengthen the muscles in your core. http://blogs.naturalcures.com/plank-workout-four-variations-for-beginner-intermediate-and-advanced/

I notice that you haven't decided upon (or anyway shared) your LC plan. There are many different types, all well documented here on the forum. Eating LC reduces belly fat.

Welcome, and good luck. This forum is full of friendly, helpful people.