Divide product options into 2 columns.

Yes, that is correct. I'm thinking of dividing it into 2 columns. Then on the first column the fields would be, Quantity and Size. And then for the second column the fields would be, Type and Add-On. 

It looks like most of the products only have two options. Only the Carbonless Receipt Pad item has a third option. To put the third option "Type" below the Quantity and Size, simply inject the custom CSS code below:

span.form-sub-label-container:nth-of-type(3) {

    float: left;

    display: block;

    position: absolute;

    margin-top: 50px;

}

span.form-product-item:nth-of-type(2) {

    height: 100px;

}

Here's how it should look after:

If you want to add more options such as Type and Add-on to the rest of the products, let us know so we can customize the code further. Regards.