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You're already familiar with resealing the roof? Aware of marginal tires and suspension on most trailers? Etc. If it is a conventional hitch TT then the Pro Prde hitch is unmatched. Also, GMT700 hitch receivers on this era trucks are not at all adequate. Specify a Class V Draw Tite for installation. Also, DIRECLINK brake controller.
Michelin recommends wood under tires no matter the parking surface. I use 12" pressure treat cut to suit, with beveled ends. Tires can be overinflated 10% past sidewall maximum when parked. Tire covers are proven to extend life. I would replace any ST tire past three years of age.
A big truck trailer service shop can do the alignment, safety inspection and brake/bearing service. A Lippert shock absorber kit would also be good.
This is also the right time to replace breakaway switch and convert exterior lame to LED. Discover and service all issues having to do with road performance first. A lame TT is then no substitute for a tiny house given higher utility costs.
The mechanical issues of a combined rig take precedence over rolling resistance and aero resistance. Once sorted, one has an adequate set of numbers derived to make future changes. A poorly hitched combo will not provide a baseline for reporting.
Good luck. Look forward to your thread. I've posted elsewhere on travel trailers at length.
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