We have had Dulungs since 2017 and I live with my Family (My Wife and With 2 Daughters- ) since 2015. 
My daughter goes to school in 6th Standard. 
and other Daughter goes to Kindergarten and she born in Germany 2016
I got Bachelor's Degree last week from Hochschule and I got also a Job Contract of 31000,00€ pa in my studied field.
Ausländerbehorde told me that, they want minimum  Salary Slip for 3-6 months then after I got aufenthaltserlaubnis with  §25 abs 5.
Can you please explain to me §25 abs 5? 
which Status and under Which §para (Rules) will I  & My family member get a residence Permit?
which is good for me? 
  I did not submit my original Passport Till date.
Which is better Rules for me to apply?
 What is my chance to get Aufenthaltserlaubnis?