For more damage and life, use P/B with 40+Life GC. Mix some P/B 7%Frw along with the charms when you see fit. 5% Frw SC are useful, since you will be running and dodge a lot in the duel.

You will need more than 1 set of charms, Serpent Vita, Serpent Inertia, Shimming Inertia, (Resist) Inertia etc.