"Wait for the buying opp. after the royalty review..."
You're correct on the mid December production. I'm assuming by the tone of your post you're expecting the SP to take a dive when the Royalty Report response is announced..
When to purchase CLL is up to the individual. If you feel, as I do that CLL has the potential to hit $30 + per share in 4 or 5 years then the current SP of $3.96 is a bargain and gambling on whether the SP may drop 25 or 30 cents after the annoncement isn't really worth it. SO I'd say buy now.
If you're not interested in holding the stock for a long time and only looking to maximize short term profit then wait till after the report response is due to make your purchase.
If you're not sure then buy half of what you want to purchase now and then the other half after the response is made.
Regardless of what you do shorts will have to cover before any major SP increase.Either way production starts in December and SP will increase to around what it should be.