Need advice on truck (RAM 2500) + rig (Reflection 337RLS) towing capability!

[Guzz Head]

Hey everyone, new to trailer life so I'm seeking advice.

I have a 2020 Ram 2500 Diesel Crew Cab (4x4) and have my eye on a Grand Design Reflection 337RLS (fifth-wheel) along with a Pullrite (either SuperLite or SuperGlide) hitch w/ the puck configuration combo.

I've been running the numbers to make sure the 2500 can handle this rig and want to run it past the experts (you all) to make sure I'm good.

I was using this link to calculate payload, towing capacity, etc. but am having trouble finding every specific value.

https://brandonreid.github.io/truck-...ity/index.html

Specs on the 337RLS - https://www.rvusa.com/rv-guide/2020-...337rls-tr42871

From the Ram website using my VIN I was able to determine my
MAX PAYLOAD - 2143.61LBS
MAX TOWING - 19143.61LBS

Please let me know if this combo will work.