First time any souls game

Just killed the tree sentinel, and man, I'm telling you - there is no reason the first boss should be this hard. Took me four hours of grinding to beat him. Now i got his golden halberd, but it requires 30 str so should I focus on increasing it? If I use it at my current level, what are the cons?

Just killed the tree sentinel, and man, I'm telling you - there is no reason the first boss should be this hard. Took me four hours of grinding to beat him. Now i got his golden halberd, but it requires 30 str so should I focus on increasing it? If I use it at my current level, what are the cons?