Hi All
I'm from Wa. where it is legal to possess Medical Marijuana, but it is illegal to sell it. So there is really no tax problem here.
Just a thought.
If the IRS takes your tax money, and all the paperwork with them is filed. That would make them a party to it, for taking your taxes. It seems to me this could help in your defense, if there is a problem. So to me it seems the IRS could help establish this as a legitimate business.
Remember this is just a thought, it may not help to legitimatise it at all, and could just send the hounds to your door.