UPDATE: I was not clear in my request. I see that now. What I meant to ask is--
What is the quickest leveling build which will give me a druid PL when all is said and done, multi-class or not?
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SAID ORIGINALLY:
I have two conceivable options:
1) Start a new 32-point druid and level them up three times.
2) Gather green steel with my favored soul and TR them after I get a sweet collection.
Will green steel help me level a LOT faster after I get it, or can I forgo that step for the sake of alacrity?