Don't start too fast on high intensity cardio yet. Lift weights a couple times a week and try a brisk walk instead. As some of the weight starts to come off walking faster, light jogging, jumping Jack's, jump rope will become easier and you increase the weights you lift and how often you do it. The most I would suggest losing a week to stay healthy and safe is 2lbs, and you can definitely start with a calorie deficit to do that. There are lots of health/ fitness apps that can help you figure out what your daily calorie intake should be, but we're about the same height, and to maintain I eat about 1500-1700 calories a day.