Share your store url so, I can take a look and assist you better.
here is the link to the item in the cart, https://reincanada1.myshopify.com/cart/add?id=19616510705721&quantity=1
if you check one of those options you need to hit update, I would like it to update it if you just click checkout
Yes, We can update those option without hit update button. This solution requires to implement Ajax API to update cart https://help.shopify.com/en/themes/development/getting-started/using-ajax-api#update-cart and, I can help you on that so, send me mail and more information if you want to do it.