Bitcoins are dangerous to accept now because of how much the price fluctuates. However, I believe if more and more retailers were to accept it the price would become more stable. The best thing you can do right now is implement a system that sells all your bitcoins if they drop a certain amount, say 10%
Agree, with one exception. If he's looking to invest in BTC, selling his hot sauce for BTC is one way to go about it. In fact, he could implement a system where it would stop offering BTC as a payment method once he's reached his monthly BTC investment goal.