And you could even switch it up so that you use the Luke contacting Leia scene for his Crait projection, have Luke live, then you show him hovering above the rock when he is moving the Raddus, and THEN he stares at the binary sunset to end the film.
Sadly darthrush, Luke is wearing his dark costume in that scene where he ‘makes contact’ with Leia from his island - so that would be quite jarring if it’s mixed with his white robed scenes in this way.
No no, you would use his dark costume sequence for the whole Crait related stuff. Think of it this way for Crait:
Kylo Slices Through Luke, Puts Saber through him in awe, we then CUT to Luke in his dark costume, focusing with the force, then we CUT back to Kylo, “See ya round kid”, then we show his eyes open when he is still in his dark costume.
So the whole Crait scene would be with his dark costume. Then when we see him move the Raddus, we at some point cut to him floating above the rock in his white robes, focusing on the force, and then once the ship gets sent into the Supremacy, you cut to his eyes opening when he is in his white robes, and him falling to the ground.
Then you can end the film with him looking at the sunset (whether he dies or not is up to the editor).
EDIT: One reason I think we weren’t on the same page is cause I was speaking in terms of DigiMod’s TLJ story structure which would go from the hyperspace kamikaze to end credits.