Does MySQL 5.6 InnoDB FTS and Cluster work together

[Cedric Rochefolle]

We are currently creating a new website that is similar to a search engine, where database is frequently updated. The search is done using FTS on this kind of index:

CREATE FULLTEXT INDEX IDX_OBJ_FTS ON `obj_data`
(topic_th,topic_en,description_th,description_en,developer,pname,name,near_by);

where description_en/th are TEXT, other fields are VARCHAR(255). With a small amount of users the performances are good, but when the number of users increases (by not much users) we have performance degradation. We currently have 4GB of RAM on the server and allocate 3.5 to mysql, so that the queries can run entirely in memory.
We can increase the server RAM to 16GB but at some point we will hit a user limit again. I am thinking of MySQL cluster but before I spend time to install I want to make sure that MySQL 5.6 with InnoDB still supports FTS when using MySQL cluster.