I am planning on purchasing my first corn snake. The reptile shop I plan on getting the snake from only feed their snakes live feeders. It is much more simpler for me to feed it frozen/thawed for many reasons. Is it EASY to make the switch, or is it going to be HARD? Are there any ways of training the snake to eat frozen/thawed? Also do most heat matts come with thermostats? Do I REALLY NEED a thermostat with my heat matt.