FTS on small Materialized View, should I cache it in the KEEP Pool ?

Hi all, I have a small MV (1773 rows) that is used in a Query JOIN (the query & the explain plan is attached below). Although I already create index for the MV, it is always FTS in the query. I read a Tuning tips, that FTS on small table should be cached in the KEEP POOL, with this command : ALTER TABLE ITT.MV_CONVERT_UOM STORAGE (BUFFER_POOL KEEP);