Improvements to the PHP online store (Yii): editing products, simplifying the cart, connecting payments

The following improvements to the online store en-svet dot ru on the self-written PHP admin (Yii, MySQL) are needed:

- add the ability to conveniently edit products (adding, deleting images, editing descriptions). Now the management of goods occurs by downloading from the table of the CSV-file, which is imported from the admin to the DB. Its very uncomfortable. Now it is impossible to edit photos of goods, they have to be uploaded via FTP, there is also no field of characteristics of the product.
It is necessary that it is possible to edit products in the admin room both separately and in tabular form (for visual appearance and quick editing of descriptions).

- Add a separate field "manufacturers article" available only in the admin page.

- simplify the basket, minimize the number of unnecessary actions - stages before the sale.

- connect online payments (preferably RoboKassa, or by agreement).

- create a script for periodic parsing of goods (photos and descriptions) from the suppliers website etm point ru to our site, also so that you can monitor new products and upload to our site. The cost of parsing write separately.

Since autoresponder bots work on fl, in the comments write "I am not a robot" and indicate your estimate for the cost of work (payment is not hourly, but project piecework), working time and readiness to start the task. No prepayment (Secure Deal). Additional details on request. The developer himself, so write an adequate minimum cost, this is the main priority of choosing a contractor for this project.