Welcome fellow washingtonian! You're a little late to the party as far as commercial growing unless you've got a big bank account.You know we lose most of our growing rights July 1 right?
You better get your card renewed because after the 1st it will be more difficult to get.the one option you have is a collective garden with 4 patients including yourself with a max of 60 plants,if all your 4 patients have 15 plant limits and are on the state patient registry that is.if not,if u are not registered you can grow a max of 4 plants.good luck.

http://www.doh.wa.gov/YouandYourFamily/Marijuana/MedicalMarijuana/AuthorizationDatabase

Accent on "doh" wagov

Welcome . Im from wa. too. Good luck on your venture......