ALOS SLC L1.1 interferometry processing parameters

Does anybody have any suggestion regarding the orbit interpolation degree issues I mentioned above?

Would it be wrong to use max parameters in the “flat-earth phase removal” tab (interferogram formation) for every pair we process e.g., (degree of flat earth polynomial:8, number of flat earth estimation points:1001, orbit interpolation degree:5)? On which basis, do we select the degree of polynomial, the number of points and the orbit interpolation degree?

Is this “orbit interpolation degree” the same with the one defined in the “topographic phase removal” tab? Does it have to be the same in these two cases?

I apologize if any inconvenience and I am looking forward to receiving any feedback.