I would NEVER recommend letting your pH go below 7.0, let alone keeping it there. While in the lab 7.0 is "neutral", in the pool it is BELOW the optimal range of 7.2-7.8! I strongly recommend you use 7.0-7.2 as your range rather than 6.8-7.0.

If you have a vinyl lined pool anything below 7.0 can start to do damage to it. Water is easier on your swimmers' eyes, too, in the mid sevens.

From what little I know, your description of the process is accurate, as is you thought to make your final raise with aeration.

Hope you didn't pay too much for the pH Plus! product. I see Washing Soda (same thing) for about $1/lb.