I have a gold pitch package from Gigayeast (vermont IPA) that was produced on 4/4/15. I know its pretty dated, but I'm trying to figure out if I can still make a starter with it? According to Mr. Malty the viability should be about 10%...however the gigayeast package has a much higher cell count to begin with(i believe white labs is 75-150 billion). Thoughts?