So far what I was thinking...
Trade a bunch of moss to the Snuggy in the Northern Undead Asylum to get Twinkling titanite in order to level up the Black Knight Sword to +5 since once I get STR to 40 (currently at 32) I could do roughly 500 dmg.
Was also considering leveling up the Uchigatana or Iiato because the bleeding dmg is great, plus I've heard some people talking about enchanting it with an element make them pretty badass.
Anyway, those are just some of my ideas but wanted to hear what your thoughts are or what you've had experience with. Thanks!