just buy a few hundered extra large autoclavable spawn bags and some filter patches, toss in the substrate and autoclave etc. etc. etc., If you want a one big thing, wait for spring and grow outdoors, you get huge yields and it's very low maintanence. Virtually no sterility needed. If you wanna know about the spawn bag idea, buy a kit from fungo perfecti, they have the type of bags i speak of. peeeace