New to the site see we have similar trucks, also in the marines...originally from Nc and stationed in south carolina but like to ask you a few questions!
That is right about the max you would want to run with a stock trans. The 6 spd do hold better. But I would still be careful on the 5-6 and 6-5 shifts. And if you are going to get on her lock out over drive and put it in tow haul mode. Hope it helps some