Add features to Flutter App

Job ID: 30866192

Budget: $30 – $250 AUD

I have purchased Flutter City App
https://codecanyon.net/item/flutter-city-directory-city-tour-guide-business-directory-travel-guide-booking-10/27911818

I would like to add a couple features to the app, as follows.

1 - When adding a new listing through the app, you can enter tags at the bottom,
but when adding new listing through the website backend there is no section for tags,
I would like to be able to add tags from website admin panel.
I would also like to be able to search by these tags in the search section of the app.

2 - In listings, when a detail is not entered "phone 2 or facebook link" I want it to be hidden in the app if not entered. eg, If I don't enter a facebook URL, it shouldn't show facebook in the app.

3 - Featured Listings - I would like to add featured listings to each sub-category, to be shown at the top of the subcategory.
I would like to add it into the admin panel "Featured Listings" where I can schedule each featured listing for a start and end date.

Please view the item from codecanyon before bidding - in your bid, please give an overall price along with a breakdown on what each requested feature will cost.