It will take months, to say the least. Also expect a knock on the door from the USCIS L.A. Investigations unit. Hopefully you'll get approved, since yours seems to be a genuine marriage.
Behar Intl. Counsel 619.234.5962 Kindly be advised that the answer above is only general in nature cannot be construed as legal advice, given that not enough facts are known. It is your responsibility to retain a lawyer to analyze the facts specific to your particular situation in order to give you specific advice. Specific answers will require cognizance of all pertinent facts about your case. Any answers offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship.
Your case does not seem to be the one that requires tons of dollars to be paid to an immigration attorney. If you failed an interview you have two options - seek an appeal not reopening on the I-130 and reopening on I-485 or refile the whole thing again.
NYC EXPERIENCED IMMIGRATION ATTORNEYS www.myattorneyusa.com; email: firstname.lastname@example.org; Phone: (866) 456-8654; Fax: 212-964-0440; Cell: 212-202-0325. The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.