We have a 2019 Ascent Limited with the hitch and will be soon towing a 4K lb travel trailer with 300lb hitch weight and 26ft total length. Once we load up we will be at about 4500 total and 400 hitch. The Ascent manual states no weight distribution hitch but what about anti sway bars? Has anyone towed with either one or both? My thought is to try without first.