The Syrian community (SY is derogatory) blends in well with the Ashkenazic community within which it is situated. The Mirrer Yeshiva, on Ocean Pkwy and Ave R is in the heart of the origianl Syrian community – the Sephardic Center is right across the street, and Ahi Ezer is within a few blocks as well. It is not a gated derfel with no interaction with others. It stretches from Avenue U all the way to Avenue I, from Coney Island to McDonald (and beyond in the S-U area for sure). Become more knowledgable about the geography of Flatbush in general. You will find a spot for both of you.
Mikdash Melech also serves (or at least used to serve) a sizable Moroccan population. Its on Ocean Pkwy and M? very close to Yeshiva of Brooklyn. (See, it is very mixed in with the Ashekanazim)