I am utilizing 4 cobs (4x4 tent) at the moment and keep my tent about 74-81 degrees. Those two temps are the coolest and hottest. I am finding that my plants like cobs at differing heights. Current run is 22", for the most part anyway.
From what I have read and learned right around the 80 degree mark at 50% RH is spot on for led and soilless mix High porosity. HPS was 75 to 78 degrees was the sweet spot for the same soilless mix but that was due to the heat they through off.