UTH is an Under Tank Heater, it heats the floor of the tank, this will keep temps up even at night....

Also Ball Pythons are naturally a docile snake, I wouldnt be too concearned about biting, if it does bite you it doesnt hurt, just kinda shocks you...

Also it is ideal to have 2 identical hides, that way the snake doesnt play favorites with one or the other and goes to the side that the temps are right...