Ok, I see everyone's point about starting with quality soil. I purchased a big bag of Fox Farm's Ocean Forest soil today from a local shop. My next question would be how to stretch it out? Meaning, I have large bags of peat moss, perlite, and vermiculite. How could I add those (and in what proportions) to my soil to make it go further?
Perhaps 30% ff soil, 25% peat moss, 20% vermiculite, 20% perlite? What do you think?