Well done! Sats only is the way!
The only reason I get paid anything in dollars now is because we publish our books on Amazon to get a wider reach, and they haven't started paying out in sats yet. They take a huge chunk of the price though, but it does mean we don't need to deal with the customer service part, and people can order books from whatever continent without me needing to figure out shipping.
However, when we get more income, I'll probably order a box of books and then start to sell physical copies for sats too, cause like you said, "If you don't want your fiat, why do I?" (I don't)