I have an old well house that I am considering putting my CPs in while they are dormant. I lost 6 plants last year due to an very cold weather. In west KY winters are spastic, one year it is cold for very short perioids, then another year long hard freezes. So the floor of the building is I think under the freezing line. I am wondering about lighting and heat. Should I have a growlight? Also should I have an heater in there just to keep the temp above freezing?