This is my thinking. I contacted the door company and they have said I would need 70mm width for the door to fit. I was going to go 100mm width and fit it flush to the front.
I have an old rotten wooden clad porch that has a concrete roof (ex council house) and wooden door. One wall is brick and supports the roof and is connected to the neighbours porch. There is a post in the opposite corner to support the roof.
I am looking to rip out the rotten cladding and post...