1) Why would your snake need to hunt EVER? You CANNOT just release it into the wild when/if you wanna get rid of the snake. Teaching it to hunt is a moot point.

2) Your moving and handling your snake WAY to much during feeding times. Moving them to and from the backyard while in feeding mode or after feed is an awful idea. Your probably stressing out your snake. And no wonder its not too friendly to you, your handling too much during a time its in feed mode.

3) Also be mindful of bugs and parasites that might be crawling around outside. Your feeder could get infected and thus infect your snake, or directly to your snake.

All in all, it just seems like many red flags.