Product Options and Addons for WooCommerce

What we need is the feature of radio selections with images.
We will have about 20 images for one group.

How will they show up on the webpage? Will they all be in one row or spillover into several? Best would be about 5 in a row x 4 rows.

The images are about 100px x 100px. Since they have detail, we do not want thumbnail size.
Can we adjust the size of the images?

And, is this responsive? That is, say show 5 columns on a desktop and maybe 2 columns on a mobi phone.