I'd agree with most of that and I don't expect the Euros squad to look like this one, least of all because there will hopefully be a new manager in place. I'd expect 442 or 4411 with that squad, in a 433 we'd have Young, Johnson, Walcott, Sturridge, Rooney, Welbeck, Bent and Campbell all competing for 3 place. I wouldn't put it past Pearce though, he used Welbeck and Sturridge in a 433 with the under 21s.
Hart, Richards, Jones, Cahill, Baines, Johnson, Parker, Barry, Young, Gerrard, Rooney would be my punt in the dark for the line up. Not overly adventurous but it'd give a platform to improve on in the second half, providing they don't get battered. Lets face it, it's Holland we're playing and not a great time to experiment.