Almost express checkout?

I absolutely want the site to go to checkout when the customer clicks "Buy" on a product. 

However Express checkout removes the customers ability to buy more. 

It seems to me like just adding a "continue shopping" option on the checkout page would give you the best of Express Checkout without limiting the customer to a single item.

In other words, I don't care about removing the shopping cart or the "continue shopping " link. I just want to go to the checkout page every time the customer clicks "Buy" or "Add to Cart" 

Any suggestions? Thanks!

The checkout page can not be altered. It is a security feature of SS.

Squarespace should certainly add this option. I get requests from all my clients for this to be an option.