How to integrate shopify cart api for custom checkout?

I recently learned that the Shopify Checkout API is being deprecated. My app relies solely on this API for order processing. I’ve been advised to transition to either the Cart API or the Checkout Sheet Kit. However, using the Cart API might limit my ability to display tax-inclusive pricing and possibly other features. Alternatively, I could direct users to the Shopify checkout page using the Checkout Sheet Kit. I’m unsure which option would provide a better user experience. Additionally, I’m wondering if the Cart API will eventually offer all the functionalities of the Checkout API once it’s deprecated.