As a matter of fact, monitors out-of-the-box tend to be way too bright!
I'm not sure to what degree your average IPS monitor goes along with the "trend" but the advice to turn your monitor Brightness way down is so basic and common, and I've never heard otherwise for an IPS monitor.
Some of your better/more expensive "professional" monitors are, I'm sure, better out of the box, but I don't have one!
As to other settings, are you talking about your current monitor or the IPS you are considering?
For either one you can use this for Brightness and Contrast:
It can get you in the "ballpark", although the "acid test" for monitor settings is to have a good, uncorrected print made and hold it in good light to compare it with the monitor display.
Color is best handled by a hardware/software kit. If your colors look "good" to you, again, a print is a good test. If it is good, you may not actually gain much with a calibrator. But when things are questionable/iffy, then calibration comes into play.
The whole field of Color Management is something that gets discussed here a lot! Check out these two stickies:
Color ManagementColor ProblemsKeep us posted!