Agreed, I'd say Aarons/Perez at LW, Moussa directly behind the striker, Ritchie RW and Diame and Hayden centrally (when we're not in possession) but in reality with the ball you'd want Sissoko & Diame basically further forward next to each other with Aarons/Perez and Ritchie furthest wide. Hayden basically sitting.
Really think if we were to get a proper winger and another striker we're set. If we sell Sissoko I'd hope we'd sign a proper creative attacking midfielder who can play next to Diame or play further forward.