Thank you for the suggestions! If I do try again, I will definitely try a flower with the lowest THC concentration available. I certainly don't want to go above 15% after the recent experience. I was reading that THC concentrations in the sixties were around 3%, but I can't find any products at my local dispensary with concentrations less than 14% (!). I'm also considering dividing edibles into very small proportions and gradually increasing the dose each week until I feel something.

It just seems like a surprisingly tricky thing for me to figure out. Another recurring thought I had during the experience is that most people don't feel this way after smoking and that there must be something wrong with me. Maybe that's true, I don't know.