What you have in the tank is not going to be a large burden on parameters such as Alk, Ca, or Mg, but you still need to get them in the right number range for when you are consuming Alk, Ca, and Mg. Also if these parameters are in the right range, you will get growth of Coraline Algae, indicating your tank is maturing. Don't worry about pH, that is not a number worth worrying about right now, also with a cycled tank, ammonia should read zero or very close, and does not need to be tested.
Everyone has a preferred test kit, some liking one test of one company for one parameter, and another tesat kit for something else. I'm used to Hanna tester for Alk, and Redsea for Ca.