Select options

Hello everyone and thank you for taking your time to read this.

Currently on the shop page each product listed has a select options AJAX button.
When clicked, it redirects to the product page.

The goal is to have the product listed with the Add to cart button back instead of the select options button. I know this is currently caused by the quantity box..
When clicked on the add to cart, I want it to auto add the product in the lowest possible quantity to the shopping cart.
After that I want the custumer is redirected to the product page.

I hope this isn’t to hard to do and any help would be greatly appreciated!

Best regards!

The page I need help with: [log in to see the link]