An rhp may get too warm, mine heats through 3/4" oak and keeps the enclosure above it in the mid to upper 80's.

I have a tub I use for my new snakes as a qt tub while I work on building their enclosures, its short about 6" tall with substrate, my boa was in this but he was still small maybe 2ft. I use a heat mat for hot spot and 75w red heat lamp on a lamp stand and on a dimmer above the tub for ambient temps, I also keep the room @75f. My blood is in this setup now and it works great.