You don't need LS on the K4 (and, yeah, it won't work there anyway). The
plugin will handle everything on its own.
(The K4 happens to be the last device where it was allowed to work standalone).
EDIT: Except you're talking about a KT4, not a K4. Ooops.

.
It's unclear to me how you're currently setting up your K5 collections, though.