Extension store functionality of Opencart 2.3

Good day
We have a store on Opencart 2.3
Looking for an expert to extend the functionality
With TK you can see the link docs.google.com/document/...

If in the course of acquaintance with TK You have any questions, please contact, I am available and ready to respond quickly. Also TK I have prepared a video in which talk in detail about the objectives of the statement of work (send in PM during communication)

If some of the tasks are complicated to implement, write, discuss alternative solutions

At this stage I need to understand the cost of the work and time

The budget is discussed