While you ponder whether you want to email us to find out how we can mine your data for gold ;-) here is an article on what metrics you should be tracking.
Our mobile app clients found it immensely useful, and the metrics for ecommerce websites are much the same. Have a go: http://latticelabs.com/blog/2013/10/important-metrics-immediately-launch/
Drop us a line; it doesn't cost you anything!