hornbeam hedge questions
Hellow every one I am new on here , I am relativly new and inexperienced gardener with a few questions, I have an ok sized front garden not huge its 9m to the culdesak road and 4.5 across then goes onto my driveway I like privacy and at the minute the frint garden is totally open, well I lie it has 2 conifers that I am going to chop down as I hate them , over the last 3 years they have got a lot bigger and blocking the light etc, at the minute apart from paved driveway the garden is just the conifers and grass, I want to put a hedge around the edges upto my drive so along the border fence and across the front were currently cars often park and there wheels end up slightly on my grass.
I was origionally thinking beech but after looking more into it I want hornbeam which seems slightly easier and I have thick soil here, I am wondering how wide they grow and how far from border fence do I plant ? I will keep pruned on the sides 2 times a year and read not to cut until at desired height which I am not sure I want maybejust above head height or waist height ? So mainly can these be kept not too wide as dont want to loose loads of garden and how thick should I plant 30cm apart etc?
Lastly I will be purchasing bare root plants 60-90CM (Were is cheapest to order from)should I hold up with canes also I will dig trench 1 spade depth but how wide ? and add bonemeal and compost does this sound ok and any help or information is greatly appreciated
Thanks again for taking time to read and sorry if this has been asked before just want to get into gardening and have it lush in future but want this hedge to be a start