Need an expert CS-CART, parsers and interfaces

Cs-cart 4.7.3.

1.You want to test parsers of goods and unloading scripts(their number, php) to handle their work.
2. Fix is to rewrite the interface for automated controls the prices, availability, offloading to the price list yml.
3. Make external edits.
4. To make changes to YML for a while.
5. To fix some bugs in the website functionality, ordering.
6. To clean the database from unnecessary characteristics.
7. Fix to make the interface filters for the goods.

Piecework payment, enter Your labor times.