No player is climbing ESPN's live draft board than Griffey Jr.
This is another trade I'd do, then trade him away for much more at some point later in the season.
I wouldn't want to depend on Wakefield. When his knuckler isn't on, he gets crushed. He'll also give you more 5 inning starts than most SP's, and is probably the first option to back to the bullpen where he is basically useless.
If you go by SP appearances, no way I'd want Wakefield on my team. If it's an inning limit, I guess it's not so bad.
* Steroid induced record