Honestly? You're going to have to get over your aversion to feeding live, because I can pretty much guarantee that there's going to come a day that you may have to feed live.
What if a year from now both of your snakes go off feed, refuse to eat f/t and begin to lose weight? Are you going to allow them to lose significant amounts before you offer them live? Or will you just re-home them?
Accepting responsibility for the care of these critters also means that you accept that there are going to be some things you have to do, that you have an aversion to.
I am an animal lover. I love my rats, and I don't enjoy feeding day at all. But I knew what I was getting into when I purchased my first ball python.
Why do you care if a mouse or rat has a chance to escape or not? The f/t cousins didn't get a chance to escape being gassed, or having their heads crashed against a hard surface either. What difference does it make if human killed it or your snake kills it? Maybe I'm not understanding the argument.
Let me be clear - I'm not trying to talk you INTO feeding live, as I advocate people feeding what works for them. But I also advocate being OPEN to feeding live if it's the only thing your snake will eat.