You're telling me I can fly 40 ft., hit a guy, hit him again, and then use division on him?!?
Granted, it's at the cost of 2 focus and 3 investiture, but what a way to open combat!
I think there are two clear options, both with compelling arguments. Mount Celstia is, of course, the plane of lawful goodness and where you would expect most LG individuals to end up. Arvandor, meanwhile, is where the Seldarine dwell, but it is a plane of chaos. I'm not sure a lawful individual would ever be comfortable there.
I guess another way to phrase this is, would they become a Lantern Archon or reincarnate into a new elven body.
Which of these two traits, lawful and elf, wins out over the other?