Welcome!
Have you driven the units to compare them? That is what I would do and decide if the cost difference is worth it (I assume the LS equipped unit is more costly).
I have chosen not to modify my suspension at all, simply don't see the need as I'm comfortable with the ride and handling of my rig. Once i got my weights and set tire pressures based on the mfg's table I was plenty good to go. I have a 2023, so have the larger stabilizer and sway bars, but it still doesn't ride like a DP.
But you need to see just how "rough" the ride is with the stock configuration first. If it is acceptable for you and your use case for the RV, perhaps the additional suspension stuff isn't necessary. It is, after all, just another thing that can break and will need maintenance.
As with all things RV, different strokes for different folks!
Safe Travels!