Check out the Paleo recipe's, especially Peter Evans. There are heaps on the internet.
I never did it with glutenfree flour, but I add 1 tablespoon bakibg powder to 1/2 kg flour.
I just checked the link to the King Arthur recipe and it is NOT gluten free. I believe they do sell their own product but it would be very expensive to ship. I did find a recipe at food.com....if you google it. Not sure what ingredients are common to your area but if you goodle GF self rising flour, you should find several recipes that might be just what you need.
Thank you, I'm hoping this is not going to be a life style change but only a dietary elimination test until surgery in about 3mths..
Here's a recipe for you. Hugs, Cece