I appreciate what you are trying to do, but asking others will not get you any useful information. They may have very different water, use patterns, environment around the spa, wind, rain, ag lands or busy roads nearby, etc.
Simple answer: cut it WAY down, and see how clean/clear it stays. I have only sold a handful of tubs which had 'filter cycles,' as most of our tubs filter 24/7. But I always tell those customers, "try the shortest filter cycle possible, and increase it slightly untill you like what you see."
HTH