1. Nah, not true. They know what food is, and when its feeding time. There's no right answer on "when" to feed. More importantly, its about consistency. If you feed at 2pm on sunday or 9pm on thursday or 2am on friday, just make sure its the same every week.
2. I think a few short session each week is ok. The idea is not to stress them out by bringing them into unfamiliar places too often. Also, if your house is very cool, remember your snake is being exposed to lower than normal temps and frequent exposure to that may cause stress, which results in feeding issues most of the time.
3. A 5 day interval is fine. Just feed her hoppers for the shortest amount of time possible and then bump her up to adult mice as soon as you can. No need to stay on hoppers for more than the first 6-8 weeks of the snake's life.
4. A snake that is fed in its enclosure WILL NOT become conditioned to expect to be fed and bite you each time you go into its enclosure. If that logic were true, you could argue with equal strength that a snake fed outside of its enclosure would then expect food each and every time it was removed from its cage for handling sessions. The frozen vs. live debate ultimately comes down to what works best for you and for the snake. Some snakes have trouble accepting f/t food, other do not. You'll just have to figure that out. Live feeding, appropriately supervised, is not dangerous and should not be ruled out for that reason. It is, in fact, a difference of opinion among keepers to which there is no right or wrong answer.
***This has been your "instant expert" reply for the day. Thanks for reading!***