Your heat mat should be providing a hot spot to aid in digestion. If you have your heat sources regulated by a thermostat you don't need to worry about your snake burrowing and being burned.
So, if you use the RHP to create an ambient temp of 82ish and your heat mat to create a hot spot of 89-90 then you have a gradient and a hot spot for digestion.
But, it is VERY important to regulate ALL heat sources with a thermostat.