Too many trees? Front garden design - Advice needed
I'm wondering If I could get some advice on our front garden, we have recently moved into a new house with a large(ish) front garden about 50ft in depth and probably the same width. We are on a busy road and I want to create a natural screen and plant lots of trees and shrubs rather than just one long hedge. I've cut out a large border to the front and side as you can see by the pictures and I've bought 5 new trees to plant:
2x Betula utilis jacquemontii
1x Taxus bacatta
1x Malus evereste
1x Prunus subhirtella autumnalis
I'm happy with my selection but i'm wondering if maybe I need to take one out? I don't like to prune trees as I think they always look a bit butchered and should be left to achieve their natural shape and size. I've left a minimum of 10M from the house for the Birches which I know get tall really quick and I've also left 1.5M from the boundary.
I guess I'd just like some advice on spacing and if what I'm hoping to achieve looks ok? We already have a beautiful Holly tree in the front garden which must be 30ft plus so I don't mind the height.