I think the radio scene works well as it is. But how about “At last… Find me” for Palpatine’s line? It would imply two things in my mind:

At last, Kylo has killed “Snoke” and thus fully committed to the dark side.
At last, Skywalker is dead. “Snoke” spend two movies being really into finding and killing Luke, taking revenge for the end of ROTJ. Now he’s finally out of the picture, and there’s no more need of the Snoke charade, the final phase of his plan can be kicked into action.