Put MFJ in the forms search bar to bring up the MFJ vs MFS Comparison form, check the box and it will split the 1040. Look in the State forms for the same type of form.

The Federal Comparison worksheet is not always accurate in the credit/payments area so just compare it to the MFJ 1040, for what the actual amount should be. The RRC shows up in the credits sometimes.

Cannot tell you about CA. When you say Student Loan Repayment, the MFS doesn't allow the deduction for Student loan interest so I don't know if that matters in the case of repayment.