I don't believe blackballed idea is quite there. Close, but won't work. To hit the 2 thin enough to barely move the 9, the cb will go a lot farther than the two will. So, you can't place the cb where you showed. To get the cb there, you have to hit the 2 either much softer, which means the 2 won't get a rail, or, you have to hit the 2 much fuller to kill the cb, which means the 9 is moving much more than shown.
Good initial idea though. That is one of the things I spent so long looking at.
See, what also worries me about answering this is that it's a 7-foot table. Against a player like you, I know distance-safeties are never going to work. I would check to see if that 2-9-3 combination goes in the side pocket and if it does, I'd need a great reason not to shoot it. Any safety I play would have to HIDE the 2-ball somehow otherwise, I have to assume I'm gonna get safed right back. I'm curious to see what the final answer is.