Magento 2 Product Data Feed Integration from CSV and Theme Customization

I want to integrate product database from my distributors and also need manual product uploading as well. I will provide a theme which you will need to customize and it needs to look like demo theme as well. Also, you will need to work on the search bar to make it a perfect one. Also, you will need to add live support as well. Need to customize Product page if needed. Also needed Server configuration with Varnish. I want my website to be faster like [login to view URL] and also something similar to this website. Regards