if your growing your own how is the Gov gonna control THC levels? and if they do control retail sales that will still leave room for your black market grows with really potent stuff. Btw where are you getting that the gov is going to be growing the cannabis the law says ther will be retail shops and wholesale grows, the gov has said med shops will have first shot at licensing they have even gone as far as to ask liquor stores if they would want to sell recreational bud.(source is a liquor store owner, my friend who was approached on the subject). Plus if you have not noticed the government is broke and don't really have the capability to spend the millions it would cost to set up a system of control over government grows. None of this is official though so we may as well just chill and see what happens. Also growing should have never been a business except for a few thousand actual farmers if it werent for prohibition and harry Anslinger black market growing would have never been an option to make money.
As far as the 5 ng it will get destroyed in a court of law there is too much solid scientific evidence to show the inaccuracies in this being law. This has been getting tossed around for over a year if there is a bill we will protest, hold speeches and informative meetings educating the public, contact our senators and congressmen make sure they understand the truth and more than likely this will not happen. Science and inventors will find a reasonable solution and hopefully we can all live with it.