Pool Chem, whadda I know???

[Bekka]

I'm learning a lot from this board. I don't feel naive or alone any more. I still have an awful lot to learn ; ) My pool is a 24 ft round. Uses approx 13600 gallons of water. I didn't find this board until I had the water tested and put some chems in a week ago. The pool looks a lot better than it did when I firsted started the chems. However, it is still cloudy. Enough not to see bottom, but clear if you put some in a glass gallon container. No greenish tint at all. Not even milky really, just cloudy. I took another test down today and this is the results:

Free Chlorine: 3.5 ppm
Total Chlorine 3.8 ppm
Combined Chlorine 0.3 ppm
pH 7.5
Hardness 150 ppm
Alkalinity with stabilizer 88ppm
Cyanuric Acid 75 ppm
Copper 0.2 ppm
Iron 0.0
I'm being advised to add Alkalinity up (sodium bicarbonate) 4 pounds
Calcium Chloride to protect the liner (approx. 4 pounds)
1 pound on Potassium Monopersulfate (non chlorine shock)

Before I spend any more money, what would be the best subs???
Thanks, Bekka