question on hwy cruising

its not crazy heavy(600lb enclosed trailer,430lbs bike, about 15-20 gallons of fuel and maybe 150lbs of tools) i figure id round up and assume 2000lbs for the trailer.

That is some SERIOUS weight for an A body, and is a substantial part of the car's curb weight. You certainly need good brakes on the car, and BRAKES ON THE TRAILER. I believe, here, any trailer over 1500 lbs is required to have brakes and a "break away" device