You will always get conflicting husbandry for hogs. My advise is take all the advise and implement it to yours. Hognose have a wide range and can adapt to many different environments.

I personally would be okay with your set I would keep it about 3-5 degrees warmer. If you are planning to get a female I would consider getting a 20 long as they can get much bigger.

Good luck and be careful! They are very addictive!!!