hey hopefull,
look into some alternatives to PF tek - if you have a pressure cooker and decent steril working area you should be able to pull off starting from rye or other grains like millet/bird seed or even better first doing liquid culture and then moving to grains. The grains you can fruit as you would PF, or just out of the jars, or you can go on to doing bulk grows. It's not THAT much more work and anyway you get more yield. You just have to do a little more research on the various techniques to keep the mushrooms happy. Cubensis strains afaik are quite easy to please, so they're a great place to start.
Just a thought.