The more payment methods you offer, the better it is for your business. But you should only take well established cryptocurrencies, which you can easily exchange to fiat and you should calculate, what you need in fiat to pay your fixed and running costs. Another aspect is , how to handle taxes of cryptocurrencies. Depending on your residence there may be resulted two kinds of taxes: Income tax and tax on speculation, when the price of cryptocurrencies rised and you didn't hold them over a year. There would be more efford for tax declaration.