AP IRIS CB70 rack heating

I was looking into getting a CB70 rack from AP. Will the 3 inch heat tape be enough for me? My house is kept at 70 degrees I could never convince my wife to keep it any warmer. Im thinking I may need 11 inch heat tape so the cold side doesn't drop too low. Thoughts?

Great choice going with Animal Plastics :gj:

I use 3 inch belly heat with all the CB70 racks I own. Keep in mind, the heat tape is to create a warm spot, not to raise the ambient temperature.

I noticed there's an option for dual side radiant heat on the AP website. Maybe I can use that to help with ambient temp and the 3" tape for the hot spot?