Personalizar App y crear una app adicional flutter

the project is as follows: I have a project already finished app demulti restaurant with delivery boy consists of 1.a user app on flutter 2. an app for delivery boy on flutter 3. Super Admin / administration panel and restaurant manager the project is: user app- customize the app change logo, name, colors, and add a filter for searches by restaurant, menu item, location keywords, in description and the best possibilities to add and create, a complete search, also make changes such as enlarge the size; or of the photo shown on the plate, and a comment box before canceling the order, In the creation of the app we need an app for the restaurant manager based on all the options that already exist in the restaurant. In this part I would like to create a web view of the administration panel through flutter (I leave it to the developer's criteria if you want build it), you should also be able to print the orders using android / ios mobile printing protocol For the deliveri app we only ask to print a receipt when you deliver the product when he confirms the delivery print the delivery information (contemplate creating a window where the customers tactfully sign we would like to hear an additional offer apart not within the rest) generate the apps from the dark flutter base code and create a web version of the user, upload the development to the necessary server and upload the apps to google play and apple, it is requested to verify and inform which is the correct server option for the development domain, server and developer accounts will be provided when you are ready to upload everything to the server and app stores development is in flutter, Push notification using FCM (Firebase Cloud Messaging) admin panel uses Laravel (PHP Framework for Web Artisans) offer contact me if you want more information maximum budget $ 400