Your reasoning does have its place in pool smarts, but not with respect to the shot being discussed. Any advice, other than cut the 8 into the pocket, is not the best.
And I still have serious doubts that you would do anything other than cut it in, given the shot in real world..
I'm going to have to side with BB on this one. Naji -- You're a good player, the best shot, and the best safe, is the old CTBIH (cut-the-ball-in-the-hole). But you're just trying to get more action from me.
If you're dead set on a 2-way, then, as others have said, aim it a little thin and it will pop out of the hole if you miss; just bring the CB across either 1 or 3 rails and you leave a bank. As I used to hear people in Chicago say, "Overcut. Automatic safe." Personally, I wouldn't put any of my focus into anything other than making the shot.