Before filing a naturalization application, you should consult with an experienced immigration attorney regarding your 6 year absence. Did you have reentry permits during that time? Why were you away from the U.S. for such a long period of time? There is always a risk that USCIS could find an abandonment of status, notwithstanding the fact of continuous physical presence in the U.S. for the last 4 years + 1 day, and begin a removal proceeding, charging the naturalization applicant as having been inadmissible at the time of his or her last entry. In this type of case, facts are important, and a review of the applicable rules is critical. As for the 3 months' filing rule, I would not do it. The USCIS sometimes has problems enough counting days and applying the rules in simple cases. I would not want to provide USCIS with even more potential reasons to deny the application.
Scott D. Pollock
Scott D. Pollock & Associates, P.C.
105 W. Madison, Suite 2200
Chicago, IL 60602
fax: (312) 444-1950
Please visit our renovated website at www.lawfirm1.com, which allows client access to case status, enhanced information on services, and other convenient features.