I love cardio!!! I think it is fun to do and relaxes me but everyone is diffrent I guess. 20-30min 3-4 times a week is a good amount and a medium pace is good. It works great for me so far
If i was you I would only do 15-20 min, 5 days a week, you dont want to lose to much weight. I find that when I do that it makes me leaner without losing 2 much weight and strength