Ummm, sorry, but you failed. This is not a Philidor, since in thePhilidor there's a knight at f6 somewhere between move two and four.
I just looked in the book by Chernev and there are many examples that the knight is not place on F6 like you profess it has to be. There are more than one variations.
Here is the link I posted about the book in question:
http://www.chess.com/forum/view/chess-openings/irving-chernev-winning-chess-traps?page=1
Now, are you sure you are an IM? Prove it, your rating isn't very good!

Micky, my position is that the Philidor is a bad choice for players below ~2000 because they tend to get passive positions that are lost by move 20. This is the same reason I don't recommend the Pirc to lower rated players.
The Philidor is not played very often in serious games between Grandmasters. I trust them. They are professionals and won't play openings that give them very little chance to win, and they don't even get 50% draw rates. There's very little incentive for any GM to make the Philidor a repertoire choice.
That leaves players who are ~2000-2400 in strength. Those players may be able to get away with playing the Philidor, usually from a Pirc move order. There are some nice traps and tactics in the Philidor, and there are some tricky move orders that will appeal to strong amateurs.
But that's about it. It's not an "ok" repertoire opening for the vast majority of players, and it's not "ok" for chess professionals. There's only a very small band of players that it is "ok" for.