While most would not consider that rig matchup to be ideal, it is certainly do able. With a GCWR of 24,000, GM is saying the drivetrain is capable. You will need to stay within RAWR/tire rating. At full FW GVWR, that may be close. At the gross wt you listed in your recent post, likely no problem.
The new GM 2500 HD is a stout truck, almost a 3500 in capability and higher than normal class 2 ratings.
Nothing wrong with the Andersen hitch, if that is what you want. Another good option is the 3700 for GM oem puck system. It is not too heavy, and manageable for one person in/out, as it easily separates in two pieces.
I don't see a real problem in your choice!
Jerry