[Cindy and Ray's Grand Tour]

Hello, my first real post so hopefully I don't mess it all up. I just bought a 3791RD and will tow it with a RAM HD3500 Diesel. The dealer is storing the Monty for me till spring. I asked them to pair me with the proper hitch and they are planning on using a relatively inexpensive Pro Series (PS) 20K model 30119. Do you have any advice for me on its suitability? Should I be asking for something much better? I figured since I have some time before having to get it installed, I would see what some experts think.