If yours is on Auto and its starting and stopping then its really not that hot yet!
j/k
Ill usually have mine on low all day at 76 or 77. Then flip it to auto in the evening. I like to have air circulating around that way I dont have hot and cold spots... ie... walking up front to the head where its usually a little warmer, and back down to the living room.
On really hot days or when we first pull in we'll run the second unit in the bedroom for the first few hours.