If you use a quality WDH with integrated sway control and keep within all your truck's ratings, it should tow well. You should find out from a scale where you stand with respect to all you truck's ratings. You have lots of power, adequate gearing and wheelbase. What we do not know is if the rear axle is overloaded, how well the WDH is adjusted, or your tongue weight %.
Check your trailer's tires. If they are ST type, then likely 65mph max. Heat is your enemy so >65mph at 90*+ is not wise. If you were towing in 60* temps, 75mph is probably fine.