I am LPR with green card since December 8,2004. In July 2008, I started studying abroad for five year course Then I came back on December 24,2008(within six months). I went back again in 1st week of January 2009 and came back August 5 2009, after seven months of stay. Now I want to apply for citizenship after September 8, 2009. I am dependent on my parents in USA and visit them in vacations.
1. Should I apply for citizenship and can I request for Biometrics and interview in December 2009 in my winter vacations because again on September 14, 2009 going back abroad?--2. In the last 57 months I visited my family friends and relatives in Canada of and on for a day or two days and what should I write in form N-400 about these trips because I do not remember the dates.