quantity decrease and increase

Hi,
I really like your plugin, it works flawlessly. I have, however 3 requests:

*Some (but not all) of our products are only sold per 6 items (using WooCommerce Min/Max Quantities), I would like the quantity plus minus in the sidebar to go up or down 6 items when clicked.

*Also I would like the price of items in the sidebar be the subtotal of the product instead of the single item price.

*Is it possible to replace the cart-icons with an icon of our own design?

Our website: https://brouwerijhomeland.nl/winkel

Yours sincerely,

Ariane