In the example you show, I'd elevate about 25 degrees, put maximum left and shoot it hard. With the CB roughly 1 diamond away from the OB, with that shot you don't need any aim adjustments so it's easy to execute the pot. The tricky part is controlling the CB enough, without jumping off the table. Your example shot isn't too tricky, but I find it much easier to put a bit of draw into that exactly same shot and let the CB come off towards the long rail past the side pocket instead of using no rails. I know you said you aren't looking for optional shots, but my point is that when doing those kind of masse shots, I find it much more reliable to control the CB when coming off with draw or follow instead of center ball to come off near the tangent line. Not just because of the margins of that specific positional shot, but in general, they just give me more control.
Out of the shot factors, I'd say pay extra attention to having the right amount of elevation. Too little and it's almost impossible to get enough action. Too much and CB (or OB) starts flying off the table more often.