I'd need an assist from Richard, but I would probably say both.
Regarding the CC, with you CYA as high as it is, it's possible that you would need so much FC to keep the CC down that it could end up bleaching out the reagents.
As far as usage is concerned, I'm having to guess on your gallonage, but I estimate that you shouldn't be using more than a gallon and a half of chlorine per week. We typically suggest that customers add 1 quart of 12.5-15% chlorine per 10,000 gal every night. I'm estimating that your pool has something like 6500 gallons, which would make just a tad over a pint a night.