I'm with Rover Bill. No I'm not against upgrading to a larger TV but it's always easier to spend somebody else's money. That said a modern built in sway control WDH with properly sized bars ie likely in the 1,000 to 1,500 pound rating range. Set up per mfg instructions at a CAT tripple scale with trailer measuring level would likely make an almost seemingly unbelievable difference in stability etc. Been there & done that. Should be a lot cheaper than buying a new HD diesel truck. Honestly it's the right thing to do with a 30' TT even if you have a HD.
Their is a free cat scale app with a gps locator with most any info you want. It usually costs about $11 first weigh & $2 per additional. Weigh your loaded truck & trailer with WD engaged & a measured front & back level TT to get steer, drive, & TT axle weights. Then relieve the WD and get the numbers again. Pull off the scale unhitch pull around & get the unloaded truck drive & steer weights. Adjust hitch & load to replace weight on the steer until if it can match the steer weight of the unloaded trucks numbers.
If your hitch is up to the job it should at least replace enough of the steer weight to dramatically improve the handling. The hitch should transfer a couple hundred pounds off your drive axle to your steer & also some back to the trailer axles. It will take a lil trial & error to get the best numbers but once you have it your done and should never need to return to the scales unless your load changes radically. You can end up with a setup more stable than the average bub with the same trailer, a 3/4 ton, & no WD.
The first time you have to emergency steer your rig to avoid an accident you will be glad you took the time to learn & do it. Because you won't be next guy pictured on the internet upside down & backwards in a ditch with your stuff littering the road.