Pick up Buster Posey NOW?

[EvanLongoria4MVP]

This is according to numerous fantasy websites:

Giants catching prospect Buster Posey was 4-for-5 and finished a triple short of the cycle Thursday at Triple-A Fresno.
It was his first four-hit game at the professional level and the home run was his third of the season. Posey is killing Pacific Coast League pitching and has shown that he's ready for greater competition, but the Giants may hold off on calling him up until June. It would be the smart move, anyway.

I am currently in a KEEPER league. Pick him up now?

[KJROD20]

Depending on the size of the allowable bench, I'm surprised he hasn't been stashed by anyone yet. Is Carlos Santana available too? Who's your current starting catcher?