I know I'm late reading this, but if you don't feel comfortable living in Harlem, please don't move here. Lenox Terrace is one of the premiere residencies in Harlem. Trust me, the residents don't want you there if you don't want to be there.
I used to live there and was always amused when taxi drivers drove into the circular drive and the doorman came out to open the taxi door. They were afraid to take a black person to Harlem and shocked when they saw where I lived.
Unfortunately, I moved because of my travel time to work and the hours I had to work, not from any fear of the neighborhoodl