Cory has a very good idea re the thermostat. aspart as well ... I use cables, too. They simply need supervision.
The daytime temp can remaian at 78 for the RETF. It should not drop below ( 70-73) 72ish at night. If chilly ,it will result in poor digestion which leads to a can of worms ! Lights... ie 11 and 13 watt LED can be use to keep the plants green. They do give off a little heat of which needs to be kept into consideration, especially in the area where the bulb is really close to the glass.