If you are a melee build, I would recommend having two types of weapons equipped:
1. A hard hitting weapon like a UGS or Great Hammer, "those" kind of weapons for ripostes. I typically use the Zweihander as it's on the lighter side of the UGS's with only 10.0 weight.
2. A fast and light weapon like a straight sword, rapier, etc., this will be your primary damage output. Personally I use the Gotthard Twinswords, not that powerful but it's one of the longest straight swords so it's more likely my attacks will connect (especially roll attacks).
I would also have some charcoal and gold pine resins for extra damage. Nameless is weak to fire, King of the Storm is weak to lightning (hopefully I don't need to explain which resin gives what buffs).