Hello there,
How are you?
Hope you are doing Great!
We have gone-through your description and got the basic idea about what you are looking for and what changes you require for your website.
We are working with the industry with past 3+ years and We have very good experience with Project management tools, like BaseCamp, Asna, Freedcamp.
We are very well verse at Complex Caching Mechanism, Magento Optimization, Themeing as well as Magento Plugin creation & integrating it with various full-fulfillment services via direct code.
So, for your Project We are confident to perform end-to-end testing on your website and do the needful changes and the changes in coding will be smooth and simple so that you can work with it without any trouble in future.
We are ready to start the project ASAP, So let's take this forward.
Awaiting for your positive response.
Cheers,
eQuest Solutions!