Japan Duty Free

Hey everyone,
We are wrapping up a 3-week trip to South Korea and Japan in two days. I’ve already picked up about 20 local scents, but I want to finish the trip with two niche/designer bottles from Tokyo Narita (NRT) duty-free.

My current shortlist:
Louis Vuitton – Ombre Nomade
Byredo – Mojave Ghost Absolu
Guerlain – Herbes Troublantes
Diptyque – Orphéon

Two quick questions:
Which two would you pick to close out this trip?

We might head to France later this year. With current exchange rates, should I grab these at NRT now, or wait until I'm in Europe for better pricing on brands like Guerlain, Diptyque, and LV?

Appreciate any advice on the scents or regional pricing strategies!