The thing about jin adv build is that there are many ways you can build it. I asked 5 experienced jin players and all 5 seems to give different build. I can give you few tips:
-a lot seems to sacrifice the 1st skill by keeping it 1/5. The skill animation takes too long and not that good in dmg.
-counter depends on you. You need to use it to get bonus for some skills so atleast 1/5. Mine is 5/5 without extension since i only do aov/gronco and i dont need super armour break.
-The push back skills is good. iirc, it have 30% debuff for 10s with 15s cooldown. You can give consistent debuff with that skill so why not? It is also used as combo spirit shooter->drastic landing