I have 2 of the ND's that I use on my racks. You'll be fine. It's a proportional thermostat. The ND just has the extra Night Drop feature which can be used to drop the temps (you choose how many degrees) at a specific time or shut the heat off altogether.

You can plug a power strip into it if you need to power more heat sources. Just make sure the total wattage doesn't exceed that of the thermostat.