Typically, I tighten the DS cone/locknut much tighter than the NDS.
When I want to service the bearings, I remove the NDS cone/locknut and pull the axle out the DS.
I simply never remove the DS cone/locknut. (unless the cone is bad)
This avoids having to recenter the cone/locknuts on the axle to get equal protrusion on the ends.
I do remove the cassette first.

Your grease will work fine.