I'm not sure what weapon i should use

Right now im using the bloodhound's fang +5 with bloodflame blade as an incantation. I just unlocked the nagakiba, i thought of maybe dual wielding it with an uchigatana but im not sure what to do. Im kinda low on runes too. What would be the best course of action? (I beat a few mini bosses and beat the fell omen, havent tried godrick yet)