That's Bitcoin ATM machines which are very common now, it's easy to buy/sell Bitcoin using that machine.  If there's a bank that supported Bitcoin in your place which means the government isn't against Bitcoin or in crypto in general, to use as a payment system in any legal business.  You're lucky enough for this.

It's been challenging for someone who will adopt cryptocurrency as payment, you need to have a patient first before people in your place understand how this crypto will work.  And I think, there's nothing wrong with your business plan, just try and go ahead.