Unless I’m missing something here, no 80 for a hot spot temp is not okay! It’s too low and honestly that should be a cool side temp.
Op my first question is how are you measuring that temperature exactly? Because keep in mind there is a difference between ambient and surface temperatures. In order to get an accurate surface temp for your hot spot you need to measure the temp UNDER the substrate where you heat mat is, preferably with a temp gun.
Your hot spot should be around 88-90 for optimal digestion, just make sure the hottest surface your bp can touch does not exceed 92. Again to ensure that I highly advise getting a hold of a temp gun which are fairly inexpensive on amazon.