opencart customization admin and vendor (webkul marketplace)

PLEASE READ AND THEN BID also if you do this project you will be my permanent developer for my OTHER 2 e-commerce WEBSITE. I need some changes to an existing website seller dashboard panel (webkul marketplace). I need you to design and build a responsive bootstrap seller dashboard for open cart 2.2.0.0 and 2.3.0.2 and some custom changer in admin dashboard. demo link to seller dashboard [login to view URL] I want open cart seller dashboard and admin panel to look like this type have a beautiful bootstrap theme. [login to view URL] 2. I want a custom setting in open cart admin panel to get all the registration information of seller in pdf format to download in one click. 3. I want a custom setting in the admin panel where I can filter the orders delivered, ( and 7 days or 15 days are over that order delivered these days must be selected by me as what I wish to be the payment frequency to the seller) also one more that returns requested or not and the result must show orders with no returns (if no return selected then I will pay these sellers) and if return requested then the order will not be paid now 4. for the above setting you can also make an automated setting that can show all completed order that has been delivered 7 or 15 days ago and no returns are raised. and the completed status should be automatically updated by the system after 7 or 15 days of order delivery. (also admin can update the status only admin not seller) 5. abandoned cart reminder in email 6. products in shopping cart reminder in email 7. automatic 2% reward points on every order seller should not be able to change this. where as admin can change it for any product he wishes to. 8. the expiry date of all the automatic earned reward points must be 90 days where as there must be no expiry date for bought reward points. 9. a beautiful gift card purchase page with automatic gift card code generating system with the code validity of 1 year like amazon and no expiry of value when added to some account. 10. should be able to drag and drop design such page [login to view URL] if you look other pages, you will see that the products are displayed in a different manner as compared to the above link.