Question for Dagger class

I have a +96 de dagger, and each lvl i enchant 1 skill to +10, already enchant Power Bluff "Chance"(+94) and Critical Prowess "Wind"(+95), pick 1 skill for me, skill that useful to enchant in my lvl.
Physical Skill (4)=Blood Stab + Heart Breaker + Reverse + Dagger Explosion
All Reinforcement Skill
All Weaken Skill except Poison Zone and Throw Poison Needle.