Richard, that sounds very like what I did to make my hitch.
As for brakes, I use electric brakes with the controller in the car. I have replaced the steering column support with a bracket like Henry used in 1931, only I had to make a RHD one. I mount a small plate behind it on which I mount an extra gauge, the controller and a switch for the driving lights. I like to be in control of the brakes when (if) the trialer starts to sway. I can stop better with the trailer (all 1 tonne of it!) behind from 50mph than I can in the solo car. Our latest camper has Electronic Stability Control which is a PITA.
For our US member who aren't familiar with metric, 1 tonne is 2,200 pounds.