Kia Rio has a bit more horsepower than the Fit but it is in a similar category so good to know.
Brakes do seem like a good idea. I always prefer them when they are an option. I will plan to add them to whatever I decide on.
I have a number of friends and family members who have purchased 3/4 ton and 1 ton trucks to pull occasional campers and skidsteers. I pull with my 1/2 ton all the time and it has never been an issue. Take it slow, and yes, trailer brakes. Other than that they are fully capable.