If you try to run the SWC at pH levels above 7.8, there will be next to no chlorine production. Ben's method will only work with bleach, and you sort of need to do a paradigm shift when converting to a SWC.

Best Cl production will be between 7.2 - 7.6 pH.

This will also help to keep your CH under control as you are probably still curing, even after 3 months. As cwstnsko said, you will need frequent water changes, to bring the CH down, and I would not go >200 ppm.

Your TA at 130 ppm is not too high, but I would start doing some dearation if goes higher. Again a lower pH will help to keep this in check as well.

Hope this helps.

Pat