Not to be a party pooper or anything; I don't know how it works in 5e, but in every game that I've ever played, and it's somewhere into the 30 year range these days, the moment that PC's open businesses, the game pretty much crashes. Again, I don't know how 5e handles it, but in the past, the PC's have to devote so much time to running the business that there's no time for much else.<br/><br/>I'm not, by any means saying no to the idea, just offering a word of caution that a DM as well as players needs to be very aware of that element of the game.