I'd pass. FWIW, Kershaw was a little lucky last year. His xFIP was 3.90. While he's going to be real good real soon, Upton is already real good and as was noted, is going to be a top fantasy player for years to come, starting as soon as this year. Yourp itching is already really heavy on young talented upside. You don't need Kershaw as much as you need Upton. Plus, you could probably trade Upton for way more than Kershaw and Lee if it came to that