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your downstairs layout is basically identical to our old place (only your kitchen looks to be a much better width), only we were more open from front to mid room downstairs, BC were fine with it.
We put in floor-to-ceiling cupboards continuing the line of the stairs front to back, providing a pantry and hiding washing machine/boiler, as well as a bit of outside storage. Super useful. Agent floorplan attached.
You'll probably get forced in to installing a sprinkler system with that very open plan layout.