A 7300 lb loaded TT will have a tongue weight around 900lbs.
Your truck the way it is equipped will handle the trailer just fine.
I used to have a ratings sheet for Chrysler axles back when I was with them. It listed raw ratings before they were derated by lawyers and bean counters. I believe the 9-1/4 1500 axle was rated at 4500lbs! But then there is duty cycle and as I mentioned lawyers and bean counters.
I wouldn’t worry about being a bit over, but just keep it in mind not to go too far over. I’m sure I’ll get flamed for this, but it is the real world we live in. And it happens.....more than most will admit. I’m sure I’ve been over on my X a few times, but I don’t think anything of it.