Adjustment of Status - I-485

Hi Everyone

I have been following this site for almost a year now , way before I submitted my documents.
I have been in a relationship for over 3 years with a USC, we finally tied the knot last December (2015).
I first submitted my documents the second week of January about 5 weeks after I got married.
They sent back the entire package to me at the end of January 2016 because I paid them too much money. I was not aware I was not suppose to pay for my husband's biometric form.
I adjusted the check and sent it back the following day. I submitted everything at once. (1-130,1-131,I-485,I -765,I-693,I-864,G325A)

My timeline:
USCIS Received docs : 2/4/2016
Got official notice. : 2/13/2016
Biometric notice : 2/26/2016
Biometric done : 3/11/2016
Ready for interview : 3/14/16
I-765 transferred : 3/17/16
I-765 notice received: 3/22/16 (transferred to Vermont)
1-485 interview notice. 4/6/2016
I-485 interview for 5/11/2016

?? I am so surprised with how things are going with my case.
      We did not use any Attorney...
      I came here on a visitors visa....B1
       * my Service center is Missouri
     * my interview is in Philadelphia

I have come to believe a few things about immigration processing that might help cases to be processed quickly

1. Prayer if you believe in God
2. Luck
3. The Officer who gets your case
4. Research, ask questions, get your stuff together you really do not need a Lawyer. If you can afford it send everything together.

I have seen so many worried people on here and I can relate, I wish all of us strength, to wait until all our cases have been approved.
Stay strong guys and God bless!

MissJ