I've essentially been doing the same thing lately, especially on longer shots. I find that sometimes using SEE and looking from the shadows to the center, or using Pro1 and trying to align to the A/C spots along with the CTEL, can be difficult, for me at least, to perceive at certain distances and angles.
Because of my working combining the two systems and playing with things, I've found I can almost always just look at and align to the CTEL, which typically gets me looking at the same fixed cue ball as OB edge to A/C or shadow to center, then I can sweep thick or thin and make the ball without an issue. Boosts my confidence, because I've found that if I'm hesitant or unsure about picking up my aim lines, then my shot becomes hesitant or unsure as well, I tend to adjust even when none may be necessary. But if I have a strong sense of being correctly aligned pre-pivot, then I tend to make a strong move to center cue ball and never question or waver from my eventual aim, and the object ball just goes in.
Scott