My two cents;
After you get some miles on the trailer adjust your brakes. I assume they are drum brakes and though the axle factory sets them to certain tolerance I find there is always at least one brake drum adjustment way off. Also if the bearings are of EZ Lube type I recommend not using it, but instead grease wheel bearings by hand. EZ Lube has a tendency to push grease past seals allowing grease to get into brakes.
Also; play around with setting your brake controller. Your sweet spot is the trailer not pulling or pushing the tow vehicle when stopping, but rather both stop as one unit. I find getting on dirt road and setting the controller to where the trailer brakes lock up will be perfect for pavement or at least a good starting point. My tow / trailer combination started at 6 and found 3.5 on the factory brake controller to be the sweet spot.
If you have not done so re-torque trailer lug nuts.
Buy Infrared temp gauge, I always use it at stops to check temperature at wheel hub. It will give you early warning of bearings going out long before they do.
2018 GMC Canyon SLT 4wd Crew Cab, DT Dsp4 tune, Clearview tow mirrors, Fold-A-Cover, Anderson 5th Wheel Hitch.