Just looked up the Timbren Silent Ride system, WOW, looks like a major suspension overhaul, looks like a great system just not something I think I'd want to do laying on my back in the driveway. I know for sure you could do the MorRyde swap (& the shackles I mentioned) in a 3-4 hours.
The 2 systems are 2 totally different approaches to the same end result. One looks like lot of work & expensive, the other much easier install & most likely 1/2, or less, the price.
Also curious as to how/why you think your trailer rides too rough?