Ride quality: walking axle vs. single

I'm in the process of building a truck specificly for hauling RV's. Weight wise I know only a single axle is necessary. But the rig I'm getting has a walking beam. Return loads are probably going to be similar weights

Option 1: Keep walking beam and run 4 single tires (I think. If I ran 12r22.5's on 12.25 super singles x4 would still have enough to remain legal). This would be a lot less cost/head ache/work but more drag/weight. Would make the second axle a dummy axle only.

Convert to single axle: More cost/less weight/less drag but new issues with frame height (critical for hauling RV's. Will be getting dovetail flatbed for trailers). Would retain dual wheels on the axle.

Another aspect is ride quality. I'm already considering removing at least the first two leaves. But does the geometry of a walking beam give a little better ride quality?

Note: I'm a cdl driver for a county job so my literal knowledge isn't too bad, but real world knowledge is limited.

thankyou in advance.

 

Ridgeline-yes, Haul and tow.

 

I plan on using shipshe to build the flatbed. But looking at the walking axle, I'm not sure it would be as simple as reusing that axle. The mounts are kinda different, plus the cost of redoing a driveshaft is just more money. Removing the second driveshaft and using stub float axles would probably be free.

 

Note taken.