Op, it looks very nice! People can pay with Bitcoin and even use the Lightning network, that seems like enough options for now. If people need something else, they'll probably request it. Oh, perhaps you can make it easier by making a QR code or something and printing it out with a text message like: "Do you want to pay with cryptos but can't find an option you like? Share your thoughts and help us become better!". But that's not necessary, it's just a small thing I thought of. I'm interested in the technical part of it, though. Like, if a person pays with Bitcoin but not via the LN, does the person have to wait in the store for about 10 minutes for one confirmation?