I just visited Fluffy’s page, and I have a couple of questions:
Have you put a thermometer on the paper towels on the hot side? If so what’s the temp? Paper towels don’t insulate that well and if you don’t have a way (rheostat) to turn down the temp, you could burn the snake (pads can get over 100deg, and kill your snake). Use a cheep peel and stick thermometer (don’t peel the backing and place it on the hot side and then on the cool side and check it against the recommended heat. The correct heat is sooo important for digestion.
Paper towels or aspen shavings? Aspen is what I use for my corn snake but not for carpets. I have found that Aspen is not good for retaining water for humidity. At the moment I’m trying out coconut husk chips…not bad.
I would recommend not using the hairdryer to thaw your mice. You can unintentionally cook parts of the mouse, REAL BAD for Fluffy’s digestion! Try warm water in a bole and dry them off with a paper towel. Make sure it is completely thawed!
Switching over to rats (pinkies or pups) is not a size issue but a timing issue. I can’t tell you how hard (if not impossible) it is to switch the over when they get older. I learned my lesson and luckily I took some good advice with my brothers JCP. I know it’s hard after getting 73 mice, but in the long run it’s so much easer and cheaper. Maybe you can keep them for x-mass and string them on your tree 
I just saw a JCP on TV that ate a welder’s glove and had to be removed surgically. The snake wasn’t that big! Watch out with your snake’s decorations!
I know this has seemed long-winded but I had very little help in the 80s not too far north from you. Not too many reptile shops in Goshen, NY. Plus, Fluffy is one fine snake!
If you need any help with heating set up I can post diagrams and suggested parts you will need. It’s so easy when you have every thing set up correctly.