I like the way you're playing this shot, by hitting it thickly you will have better control of both the 9ball and cue ball. This shot has several benefits and it's easy to execute, plus you're protecting your position as well.At first I was just thinking nick the 10-ball toward my hole and send the cue ball across the table so that the stack hides the 10, now located even closer to my pocket. But on closer inspection overhead, it looks like there would be too much chance for a scratch in the opposite side pocket, or you would leave the 10 too exposed (either for Efren to hit directly or by kicking off the side rail).
So I go with banking the 9 but not so much to make it, but to hide the 9 along with the 10 behind the stack. Maybe even the 9 "gets lucky" and drizzles in -- either off the ball I have shown, or further up the stack