I have recently set up a small ecommerce experience for my mother-in-law’s site on Ghost and went a similar route: From Ellie’s Workshop to Your Wardrobe: Handmade Reversible Hoodies
Initially, we also thought about a shopping cart experience, but that would involve quite some custom coding (e.g. assembling all the products, then creating a custom Stripe checkout,…).
So, we went the easy route and just set up products in Stripe, then generated a payment link, added some custom HTML cards in Ghost and well…here we are.
If the shopping cart is vital for your idea, have a look at @Cathy_Sarisky’s thread here: What I'm working on - eCommerce within Ghost
This has helped me tremendously when setting this up for my mother-in-law (but in the end, we decided it’s very unlikely for somebody to buy more than one product at the same time).