Show stock availability in Cart and Variant quick select.

Hi all, we are building our site around your pacific theme and I would really like the cart to show the stock availability info for each product that has been added to it. It would also be handy for the stock availability to be shown in the quick select product box on a product with variants as well.

Is there an easy way to do this with a plugin of some kind as we're trying to avoid custom code to assist with the future upgradability of the site?

No, sorry, there is no such functionality available in Pacific theme. You will need some custom development to achieve that.