Like most putatives, its 6% Neroli IMO. That gives the best diffusion and mixing potential over the widest possible dose range.
After that, 6% Akuto is also viable but it does have a more limited number of sprays before it gets too obvious/difficult to cover/complement.
Then you can use almost any cologne you like, or a cologne strength product like Ammo for the primary/cover scent - and that will also help carry the neroli/putatives most effectively.