I like this a lot. Cabrera's body type and age aren't great (not bad, but not great), and he's battled addiction this year. And he's generally a little overrated now that he's only 1B.
But Strasburg's a wonderful sell high, and a maybe first round hitter is more than enough.
Think about all of the SP you would currently deal for Miggy: likely all but Lince, and 75% of posters here would do that, too. Unless Strasburg is some sort of Stat-borg from the future, sent back to terrorize us Terminator style in ways we've never seen, he's no better than the creme-de-la-creme now.
Miguel Cabrera and a 3rd round pick, 20th of draft, 124th player overall. Probably in the range of a Nolasco or Cargo type.
I don't see how you could turn down the miggy side. Not only is he still getting better, he's among the safest fantasy players you can have. What you see is what you get. Not to mention you could get rid of Strasburg before he becomes labeled a bust