Would you play gigg's with rooney up top or would start with rooney and hernandez?

that's the formation i think they should start with, rooney and gigg's up top, valencia and nani on the wing's and carrick and gibson in midfield, have hernandez and berbatov on the bench, thn if they struggle to make chance, they can go 4-3-3, take valencia off and play rooney gigg's and hernandez up top