I agree with your thinking here, but I've been seeing a lot of suggestions lately about us losing to Houston next week, and I think that's awfully premature to assume, even with a depleted cast.
We're talking about a team with no running game and Brian Hoyer at QB, who are 4 point underdogs to Buffalo this Sunday. While I'm never one to overlook ANY game, I have a better feeling than many regarding our chances @HOU, even if it's against a team playing well right now.
As you mention, we could afford to lose it if we get past PHI, but I'd rather have a game in the bank for the last 2 divisional match ups on the road.