Amen Mike. I ditched most of my weekly testing last year. Between testing for alk, ph, calcium, nitrates, magnesium, potassium, iron, and iodide, it was just getting too expensive and was taking too much time to test all of the above.
I'd recommend stick with what you have till your tank gets locked in. I did this for about the first 8-9 months. Now, I just check the salinity every once in a while. Mike's right, just watch your corals for any potential problems. Last month, one of my purple acros started losing color at the base. Checked the alk, and it was low, so I started added baking soda to my make up water. A few weeks later, the base was back to it's normal color.
I refuse to join any club that would have me as a member.
Groucho Marx