That's what were here for is questions
Can you please tell us what your heating, length of the runs, and such
As far as your temps, I'd leave them alone. I used tone a fan of running my stove cooler, but u learn as you go. The lower you run the temp the more likely you are to cause corrosion in the firebox.
Let me explain, burning wood gives off moisture, that moisture will collect on any metal surface below 140. So if your stove is 160,the heat is on, the kids are taking a bath, your return water could be coming back 110-120 degrees, that return water could cool the steel on the firebox perhaps on one side or one spot, then the moisture from the wood will want to gather there and drip down into the coals causing an acidic problem.
But until I learn ore about your application and installs I can't be of much help. The adjustments as far as air n such sound right.
Feel free to give me a call