Flutter Developer for Template Additions

I need a skilled Flutter developer to help modify and adapt a template I've recently acquired. The project revolves around adding two specific features to the template: in-app purchases and social media integration.


Requirements:
1. Update backend URL
2. Integration of Wompi Payment Gateway:
* Utilize the package: https://pub.dev/packages/wompi_payment_colombia/example
3. Integration with Group Chat API:
* https://grupopro.baevox.com/
4. QR Code Generation:
* Generate QR codes in the user profile for check-in
5. Physical Product Purchase Process:
* Design the shopping cart page
* Design the checkout page
* Use endpoints to create an order
* Integrate the Wompi payment gateway and disable others
6. App Translation to Spanish:
* Configure translation files to duplicate an existing language in Flutter and translate to Spanish
7. Training Zones API-Related Activities
8. Generate Android APK and iOS IPA
Template Link:
* https://codecanyon.net/item/mightyfitness-complete-fitness-solution-flutter-app-with-laravel-backend-chatgptaifitbot/48663505
Deliverables:
* Updated and fully functional app with new endpoints
* Integrated Wompi payment gateway
* Functional group chat feature
* QR code functionality in user profiles
* Complete physical product purchase process
* App translated to Spanish
* Training zones functionality
* Android APK and iOS IPA ready for deployment
Please provide your previous experience with similar projects and your estimated timeline for completion.