Sloping gardens

First thoughts are about the kitchen doors and windows - does it need 3 doors? My kitchen had been extended before we bought it and had 2 back doors and 2 windows. We turned both back doors into windows, above units and turned the biggest window into patio doors for access to the garden.

The doors are a bit odd. One is the door from the entrance hallway - can't remove that one or you could only enter the kitchen from the back of the house! One is a door into the back room, which is the only way into the back room from the front of the house. The third door is the original back door with a window next to it, but it now leads into a small rear porch. You could remove the door into the back room and try and knock the front and back rooms together (or put a door between them) but that would involve moving radiators. Could block off the back door (and just use the french doors in the back room as rear access) and put units along that wall, but then there would be a random outside porch that doesn't lead into the house! Could remove the back door and window so the kitchen extends into the porch, but the porch is just PVC and I'm not sure you could easily put units in there - it would probably need rebuilding.

There is a pantry in the kitchen that I'm sure could come out, so that would allow one more unit (and a cupboard above). I'm sure there are other ways to make it work, but without photos from multiple angles and an accurate floor plan, I'm struggling a bit to imagine it!