I think this formation is too light weight , too narrow and would be over run by liverpool, also D.Silva doesn't do well against high intensity teams like liverpool, If we are going to work with that formation then D.Silva has to be replaced by Sane
Mendy & Walker is the width.
I understand what you mean about lightweight but the only other option would be to replace one of the silvas with Gundogen, which wouldn't make us much more solid.