cc,
Just for reference... I also live in the DFW area... I only have a 17K pool and an IC40... I have to run about 50%, 24/7 to maintain my FC at the proper level.
Here is what I would do.. Install two cells in series. One cell would be controlled by your automation system and the other cell would run independently.. The independent cell would produce the say 70% of the chlorine you need and the automated cell could be adjusted up or down to produce the rest..
I guess another option would be to run the IC60 at 100% and just manually add chlorine when needed in the middle of the summer.
You are just setting yourself up for failure if you try to run a 50K pool on a 60K SWCG in Texas..
Thanks for posting,
Jim R.