Hi! I cant wait to see some pictures. I've read they are sensitive to heat, and that heat above the low 80's for prolonged periods can kill them. I checked, and a lot if guides say around 65+ is minimum safe temperature, but I also found a couple saying daytime temps should be around 72-79f, with a slight dip being acceptable at night. They'll probably be fine, but you could get a heating pad and a reptile thermostat. The heating pad can be attached to the tank and then plugged into the thermostat, which will monitor the tank with probes to make sure the temp stays pretty constant, it can even turn it off if it starts getting too hot. This would make sure you have a heating option going if the temp were to drop and you werent home to turn on the house's thermostat(unless it turns on automatically if it gets too hot or too cold.) during the occasional high 40's you mentioned.