i would do the fish in two lots, dannios first to cycle the tank then your cories, just throw them in and do 20% waterchanges daily for a week, then drop it to 2 waterchanges per week.
then add your cories and any more dannios.
i would only test the water every 2-3 days during the cycle to give you and idea if you should be doing more or less water during each waterchange. rember to do the test before you do the waterchange, not after.