@Essadis911 As @LazerRay said, your optimal endgame path will be affected by your stockpile of Augment Transfer Passes and Mission Badges, the latter of which can be exchanged for strong augment capsules (Mana Reverie, Aether Factor, and Astral Soul). I'm short on time today, but I'll leave a couple quick thoughts and come back tomorrow if you want any step-by-step suggestions.
For your weapon, as LazerRay noted, if you have 100 Transfer Passes to spare then you can try for an 8-slot Klauz weapon with S1-S5, Exceed Energy, Divine Order, and Grand Precision as Exceed and Divine can only be affixed otherwise with super expensive receptors (AC scratch rewards). If you don't want to use passes I'd probably go with Grand Precision, Mana Reverie, and Phrase Decay / Precision 6 / Astral Soul depending on the content you play/your access to Jellen'd targets. You can make Mana Reverie from scratch if you have enough meseta to buy 8-slot Profound weapons and I walk through that process in the 2nd post of this introduction to affixing guide. The 3rd affixes I mentioned can all be made using a particular weapon's Augment Factor which becomes available when the weapon is at +35 (e.g. any +35 Basilisk weapon at 8-slots would let you affix Phrase Decay).
I'm not sure on the optimal SGAs for Ranger, but did want to give a shout out to S4: Escalating Pursuit as that's easy to obtain (Rising Weapon Badge 5s or Player Shops) and is pretty valuable to most classes.
And one last note about the weapon is that I believe Ranger is one of the few classes that actually doesn't go with Klauz in the endgame. I'd have to do some Googling to remember why, but I believe it has something to do with their rotations not taking advantage of the weapon's potential like other classes can.
As for units, if you need to make your affixes from scratch then I'd wait for a boost week and go for a 6-slot build similar to what LazerRay suggested:
- Graceful Precision / Grand Stamina capsule
- Ex Soul
- Precision 5 / 6
- Doom Break 2
Keep in mind that the Klauz units have a Glare as their Augment Factor (SAF) once you enhance them to +10, otherwise you'll need 2 copies on fodder during boost week (would probably replace the leg glare with one you make yourself that has RNG dmg if you only play Ranger).
Ex Alles Soul / Ex Tir Soul will require 2 copies during boost week.
Precision 5 comes as an SAF from the Novel Arms (Rising Weapon Badge 5 shop) and Pecision 6 from the Rivalate Arms (Zig upgrade).
Doom Break 2 requires 2 copies during boost week, but also comes via SAF on the Avion Dusk back unit which can drop from Tokyo Rainbow Keys.