As discussed in chat you woudl implement
1. New UI into the APP
2. IAP in the APP
3. Admob in the app before IAP and remove them after IAP such that before IAP there will be limited functionality in the App and after IAP the user will have access to full functionality of the App
4. Upload the App to store and will provide me build to test the app
NOTE : The Deadline for this Job will be MAX 10 Days .