Welcome, I'll answer the smart pots/air pots question. They work by air pruning the tip of the root which in turn forces feeder roots to branch off from each air pruned root, what it does for you is creates a much larger root mass that works more efficiently at delivering nutrients to the plants. I also second herbies, though if you only plan to grow autos you could use autofloweringseeds.com which is Herbies auto site, what's good about them is that when they offer free beans they offer autos, which is nice. I have ordered successfully from both. Oh, and welcome to AFN, and good luck!!