I think that's a Kevin Keegan lineup - don't mind how many you score, we'll score more.
Shaw and Walker are both too attacking minded to play in a back 3 - if you want to play a back 3 you really need 3 'proper' defenders. Shaw and Walker are best used as wing backs.
No holding midfielder, and I actually think so many attacking players you're in danger of a 'too many cooks' situation up front.
Sure, they're all excellent players, and wouldn't argue against any of them in the Euro squad, but not playing together.