I'd recommend holding off on scratching that itch until you see how bad the news is on Monday.
I slightly disagree. The correct strategy for someone wanting to add shares is to add half that amount now and the other half after the CC.
If the news causes it to decline further you get the other half for less, if it causes it to increase, you'll be glad for the half you got now.
The simple truth is we don't know what the CC will do. If you believe JBII has a viable method to produce fuel from waste plastic as I do then you believe in the long run the stock will run like a scalded dog.