Literally having the exact same issue. Trying to set up different options for quite a few things, and it's not viable. Taxes are a huge issue that I wasn't even aware of, since this is my first e-commerce go-around. I also spoke with TaxJar, and they didn't mention anything about an integration for tax calculation. I want to wait and see if they set it up, but I don't think can wait. Nervous about shopify, though...