Have you heard of or considered Marine Park in Brooklyn? The Marine Park Jewish Center, in spite of it name which some associate with reform, has a large cross section of the orthodox spectrum ranging from really modern to a few yeshivish visitors. There is a new BT couple that recently moved in and they told me that they feel very welcome in the community. The Rabbi is very involved, the shul holds by the eruv (not up for discussion right now, so lets not comment on it) and there are playgroups for children every week. There are about 120 member families, so it is not just a small group and they can arrange for you to come for a shabbos to “check out” the community.
The beauty of the location is that it has somewhat of an out-of-town feel but all of the convenience of living in Brooklyn.
Anyway, just something to consider