We would like to make changes to the site's design

I would like to make changes to our site
Once you click on the Quick View button in the window that opens I want to be able to choose the options of the dress and not just a button that registers more options.
Even in the pop-up window of the Quick View should be an option to add the product to the cart.
I would like to design the site more and make design more user-friendly, faster and also mobile.
I would like to add a new line of products sold like this site
The top intention of sales
I also want to make buttons up that will allow to change language and change currency like this site:
And add the best selling products like here:
You should also write some articles to the site's blog.
And do some SEO on Google and Facebook