Shopify Website Coding/editing/design

I need a shopify expert who is able to complete the following on my ecommerce site:

Product cards- I want to edit the font type and size of the product fields

Information page design- I have an information page on the site and I want help with formatting the text so it is a nice design

I want someone to format the products so that out of stock products are automatically filtered to the back of the page, I want the product page to show the date the product will be back in stock

Stay in touch email feature- there is latin writing on this feature that I am unable to change

I want someone to sense check the coding of the site to ensure everything is set up correctly