Add complex features to app. Awarded coins for registration, push notification etc.

We have an established android app on google play, however, we would like to add some features to the APK and create a new version that will be targeted to drive traffic to a particular web site. The APK currently has features such as share for coins and some facebook integration but we want more. What we require:- - A sign up for coins form integrated - so, in return for registering on a signup form, players are awarded coins to play (using mailchimp form) - Add facility to send push notifications - Better Facebook integration (currently there is a share facility but it's not very good). - Integration of our own banner ads as oppose to the current admob ones. Thanks,