Don't kill your yeast with hot water. You need warm water. I personally don't use a thermometer to measure the warm water temperature, Try not to overbake the pita otherwise, you will end up with a cracker Cooking the flip side of the dough is optional, however, you can choose to cook it for few seconds to a minute if you choose to. In order to keep the freshly made pita bread from drying, cover them immediately with a damp kitchen Towel after cooking them. Addition of wheat flour is a good idea if you choose to. I have done that with this same recipe and it came out beautiful. For storage, keep this flat bread in a sealed plastic bag and keep in a cool dry place for about 5 days, in the freezer for up to 3 months. Refrigeration is not advised because the bread will dry out faster and become stale.