Have a little dilemma heating need your advice

I keep my snakes at a house my parents are currently renovating. To make a long story short the heat in the house is getting turned off and I'm going to try to keep the snakes at that house if possible. I live in New England so the house is going to get pretty cold... My setup consists of a rack with six snakes/41qt tubs with 24" strips of heat tape, the room itself is pretty small and insulated. With added heat lamps maybe even a small heater in the room be alright? If not I may have to part with a couple...

You could use a kero heater for the room, should be fine

Assuming all the snakes have belly heat using a space heater to keep temps above 75 would work fine I'd think.

Thanks for your advice.. I dont think im going to take the chance of anything happening, considering I will only be able to check on them weekly. I will just have to slim my collection a little bit and keep them in my small apartment.