There's really only one man I can think of who could just perfect this lineup, and that's Albert Pujols. He's one of the best hitters in the history of the game, and it would finally give the Sox the feared right handed hitting bat they've been missing since Manny. Adrian/Pujols would be an even more feared combo than Papi/Manny. I'm sorry, while Youk is a great hitter, he's been out of his element trying to be that big bat in the middle. That's just not who he is...he's the Greek God of walks. You go out and get Albert and you can put either a righty or a lefty in RF, and they don't have to be a power bat which opens up all your options.
I don't care how much it costs, it's a very easy one stop shopping trip...give him liverpool or something and your lineup is set. Then you can use any trade pieces to help the pitching issues since there aren't any great FA arms out there anyhow.