Where to install Kibana (and tools like it)
On macOS the canonical place to install Unix software is /usr/local/, with the usual set of bin, lib, etc etc. beneath it. Going with this your installation of elasticsearch would seem to be bit odd but that is probably easy to fix.

You could also go with Homebrew which allows an easy installation of a lot of Unix software (and which uses /usr/local as a base as well). Both Kibana (4.4) and Elasticsearch (2.4) are available through Homebrew.