On my former 31 foot class C on a F450 Chassis I had an alignment, replaced OEM shocks with HD Bilsteins and installed a rear trac bar from Hendersons. I did only one thing at a time in that order so I would know which thing made the most improvement. The rear trac bar definitely made the most improvement; like night to day. Side winds were much easier to handle and so were oncoming large semis.
If I had installed the trac bar before replacing the shocks, not sure I would have changed the OEM shocks. The alignment was definitely needed. I cannot believe the motorhome manufacturers do not check the alignment after doing so many changes to the chassis. Wish you the best.
Ray