Exact same set up I did at my parents house. Linksys 4 port router form my dad's wired rigs, then addded the 900+ Ap for my 2 little sisters. 1 running d-link USB clinet, other running an SMC. Even with a 50% signal, they are still getting 3Mb wireless upstairs to downstairs, compared to my dad's 5mb wired to the net.