Greeting!
Hope you are doing well
Glad to see, you have already a designs of end Application and thanks for sharing your interest provisioning to the development of Mobile Application only on Flutter. Pleased to inform, I do have a better experience use Material themes and widget based on firebase in Flutter. We can start development from the day one.
Mainly the mobile application usage the API, SDK which interact with the widgets component. In that case, we will require backend panel to manage users account and API development for mobile App. Based on that, I have mentioned below some best framework for your reference for the entire development.
=> Mobile Application:
1. Flutter I/O Single code base for Android and iOS.
2. Firebase for Push Notifications messaging and Analytics.
2. Fully material themes.
=> Website & Admin Panel:
1. PHP Laravel Admin panel backend in order to manage the Admin stuff like product, users management, and many controls as applicable.
2. API programming Node.JS
3. Fast Database like Dynamo DB or MongoDB.
4. Online caching feature technique
I hope aforesaid suffice well at this moment. Would appreciate if you share your input. So that, we can commence our discussion ahead. I am very happy if we can schedule the conference meeting to discuss entire flow. Accordingly, will share with you the timeline and project development cost.
Looking forward to receiving your further response. Thanks