I have a 4'x4' area that is a bout 6 1/2' tall. I have a 400w switchable ballast MH/HPS light. For legal reasons all I want to grow at once is 4 plants. And I want to produce at least 4 oz every 4 months. I am going to start out in dirt, but eventually want to move up to a hydro system, maybe bubbler buckets. So my questions are: Is this enough light for my grow? What strains should I use for an indoor grow to get my target yield that have a good potency potential? And since this is my very first indoor grow, any pointers to share with a noob? Any help is greatly appreciated. Thanks in advance!