The process took 7 months in total. We applied in October and had our interview this month. I am a visa overstay. After subitting the I-130, I-485 and I-864 in October, I went for my Biometrics in December. After that we waited till April when we received an interview letter in the mail and then we went for our interview a month later. If you have any more questions please do not hesitate to ask.