It is possible (though, unfortunately, not likely) that I will be up in the area at around the same time. I would love to catch up with you and Roz, if that is workable.
If you are looking for a private guide, your best bet is to contact your fellow moderator, Tony Bad. He knows NYC very well. Brooklyn is made up a lot of lot of different neighborhoods, so it is easy to make such a big area into a much smaller place (targeting Greenpoint, say, may yield a bunch of Polish places; while Bay Ridge - I think - is a little more traditionally Italian - still?). You can also find a great number of ethnic restaurants in Queens along the #7 subway line.
Again, I would encourage Tony to chime in with some ideas.