Let me tell you of my experience years ago when I transported manfactured housing aka mobile homes. Yes, the trailer was much larger and heavier than yours but then so was the towing truck, called a toter in the business.
I was transporting a 16 foot wide by 80 foot long wood sided, shingled roof mobile home on a two lane blacktop when I came to a long downhilll run of about a half a mile with a narrow bridge at the bottom. To make a long story short, when I hit the 'trailer brakes' and discovered there were none it was to late to downshift and the toter brakes were inadequate to slow the load much while maintaining control. It was a long, long half mile and with great effort to keep the trailer from overtaking the toter as it was pushing me down the hill. I was very lucky there was no on-coming traffic as I aimed for the center of the narrow bridge to make it across as a speed in excess of 75 mph. There was no other choice.
Yes, get a brake controller and make sure it works and so do your trailer brakes before heading out onto the highway.
2012 Fun Finder XT 276 Toy Hauler & Harley Davidson Ultra Classic with Condor wheel chock
2014 Dodge Ram 2500 AT 4X4 Crew Cab 6.4 L Hemi, 373 gears, tow package, Rambox option, Revolver X2 tonneau cover, Equal-I-zer anti-sway hitch.