Thinking or refurbishing the stairs.

[wrightyintheafternoon]

Hello fellow DIYer's. I'm thinking of refurbishing my stairs by painting them completely and adding either a runner or stair mats. I also have a half landing that currently has floor boards. The idea is to paint all of the stairs and the bullnoses of the half landing and replace the floorboards with a suitable engineered or solid wood floor 16mm to 20mm thick. If thiner I would lay a 6mm or more ply sub-surface to make up the thickness. The bullnoses are approx' 22mm. The upper half of the half landing doesn't have a bullnose so I would remove the boards and put one in. I'm thinking the white painted stairs and a dark board would be a great contrast. I would also lay the same solid wood on the landing. The existing white paint is how the stairs was many years ago before we fully carpeted. Any downsides or pitfalls for this I need to watch out for.