Raw? That will increase it's base stats which is good at the beginning but you'll want to replace that infusion as you get higher level as then you want the scaling on the weapons. Obviously play the game however you want but the one of the games many strengths is the build and weapon variety so don't be afraid to try out different weapons, you'll come across a great club in the first part of the game and it might just look like a lump of wood but oh boy is it a hell of a lot of fun, same with some of the huge swords, again you should be picking some up soon. You get weapon arts by pressing L2 and some weapons you can follow this up with R2 or other combos, the big swords have some amazing weapon arts. The short swords are very powerful because of their speed and dps but they are fairly staid so if you only intend one playthrough I would recommend experimenting. Explore every nook and cranny too, especially in the early parts of the game there are lots of little hidden parts where you can find awesome rings, weapons and even NPC encounters.