You can easily just maintain higher chlorine levels...in fact, given your geographical location, that might be the smarter choice. I'm near Shreveport, LA, and I intentionally keep my CYA levels at 80-90 because I actually use less chlorine in the long run, and don't have to add it daily.

Be careful with the cal-hypo, though--like Watermom said, your hardness is already at 200, and when it gets too high (somewhere in the 300-400 range), you're going to start having problems with milky water that won't clear due to the high calcium, and the answer to that issue is more drain/refill. So I encourage you to switch to bleach (or liquid chlorine if you can get it) as soon as you can to avoid having to dump more water.

Janet