If you are using this circuit as an amplifier you must use feedback, and you don't have to compensate anything. When you apply the feedback network arround an amplifier its operating point is automatically adjusted (for an infinite gain, its input voltage becomes the VOS).
CMFB is only needed in the case of a differential output, which is NOT your case.
A high gain amplifier can be used as a continous-time comparator (again no CMFB is needed). However, if you have a clocked system it is usually more convenient to used a latched comparator, which uses positive feedback (faster&lower power).
Rgds