Finger bar hedge trimmer

Good day,

I have 1200 meters of hawthorn and other growth along my driveway into my house. It is a very old driveway and I want to ensure the hedges are maintained properly. I also have 50 acres with substantial hawthorn hedges which I would like to keep under some level of control. I want to cause minimal damage to the hedges and wildlife.

I suffer from a spinal issue and cannot manually trim all these hedges. I don't want to have some person come in witha flail mower and damage the hedges, I would prefer to do it myself. I have an 80hp tractor and was wonder what people's thoughts are with using a finger bar trimmer such as Rinieri BRM 200 or similar. Are they a good piece of kit or do you have any other brands that you would recommend?