Looking to make a multiple option product page

I've read through all the old discussions around this topic, and I'm afraid the answer may be that Squarespace still can't do this. Thought I'd post anyway in case anyone has come up with a solution to make a product where you can add multiple items and add to cart from one page... 

I have a group of products that are unique but related. My client would like something like my mockup I created below. 

Key is ability to have thumbnail photo, dimensions, price, and add to cart button so that the customer could select several items from one page.