When you’re sizing LEDs always go by the power draw from the wall, not the marketing size. if they give it in amps, then multiply the amps by the voltage from the wall to get watts. The general recommendation for high quality LEDs is 30 watts or so per square foot, more for low quality lights. For temperature and humidity monitoring I like wireless units that you can check from your phone. They log and graph the temp and humidity so you can really tell how well you’re controlling the environment And will save you from opening the tent every 10 minutes. I use SensorPush. Inkbird and others make them too. Why are you thinking to grow Autos? Personally, I think Autos are a genetic abomination. But aside from that, the thing about autos, is that once they germinate, the clock is ticking. If/when you make an early mistake, there may be no way to straighten it out before they go into flower.