General question about decos in general. 

I have a specific house where I have decent paths line of sight around some thick stone walls, but one room where there's simply no way of getting line of sight. In principle, I can drill through a wall to attach one of the slave decos with good wireless backhaul to another slave deco that would get its backhaul wired from that slave deco. As follows. Can I just confirm that the slave decos will work as I expect them to like this (hope the diagram makes sense). Not the best diagram in the world as I should have drawn a wall between the two slave decos...

If specific models make a difference, I was looking at using deco X50s.