If you follow the recipe, exactly, you don't have to test for CYA for awhile -- it will not come up that fast. If you start swapping things in and out, you'll need to get a test kit pronto. Basically, these are your only options. There are others, but they cost 2x as much. Only the HTH kit is available locally -- and only at some Walmarts. It's a small incomplete version of the K2006, but will work for now.
HTH 6-Way Test Kit @ Walmart
Taylor K2006A (3/4 oz bottles) @ Amazon
Taylor K2006C (2 oz bottles) @ Amazon
Also one caution: notice the seller at Amazon; Amato is preferred and cheapest. They are often out of stock at the end of the day, but restocked in the AM. VM Innovations has been OK, but do NOT buy from "Swimming Pool Warehouse".