I like this. It is close to what I'd do as well.
Four at the back and overload midfield. We're only trying to win by a single goal, what we need is some control of the game. More bodies in midfield means our fullbacks don't always have to supply the width meaning they don't get stranded so much. Cut the supply to the wings as early as possible from our forward players. If they get past that point picking out their FBs on our wings then we're fucked because we don't handle those situations well defensively.
Kane is a game changer and if he can play 90 minutes plus extra time then I would play him from the start. But assuming he can't then I'd play Dele in a false 9 position with Son and Moura providing pace on the wings. It's sort of a midfield 433 I really think this set up would cause Liverpool problems and there is defense and good work ethic in the team all the way from the front back which is going to matter because Liverpool are great at attacking. In central midfield we avoid having two players getting pulled into the wings and finding ourselves short in the middle, because we we have an extra man there.
I just see this allowing us to suffocate their attack at root and at the same time allows us to do what we're best at, attacking.
Lloris
Tripper, Alderweireld, Vertonghen, Rose
Sissoko, Winks, Eriksen,
Moura, Dele, Son