The benifits outweigh the risks for me, and my quality of life is much better now.
I should probably be on a very similar regime to yours. But I have a cardiologist that doesn't want to treat anything aggressively. If I didn't have to travel a couple hundred miles I'd hunt for another cardiologist. I'll have to eventually, though, as it seems despite docs saying "oh no, it's harmless" after enough years of tachycardia it can mess up one's heart.