Critical factors unmentioned....How are you getting to airport? Parking rquirement & process?

Absolutely check in early, printing BP the night before, and check updates for terminal & gate #.

If being dropped off, go to terminal entrance nearest your gate, and at that time of day (!!), already checked in, security ought to take no more than 5-10 minutes. To be safe, rather than sorry, plan to arrive at terminal not much less than an hour before scheduled take off.

TWIAVBP ("The world is a very big place!"), and DFW is too. Plan ahead to know where you need to be and the most convenient, timely mways to be there.