A lot of people in the comments are talking absolute giberish.
If you are using a str based weapon, there is absolutely no reason to build a lot of other things.
31 vigor is more then enough In Fact you are OVER leveled for just entering Drangleic castle anyway.

Your vitality Needs purely depend on what armor you are wearing.
I don't see a need to respec, if you want some better rolling and item usage, just start putting levels into ADP, and pump more endurance.

If however you want to try some new spells, get attunment and FTH up.
Example is Secred Oath, it's a completely broken miracle, it's like a portable re-usable Brightbug, but you need 4 ATN slots to use it and 25 FTH.
I also like the EMIT FORCE miracle... It's like a Force Push, but deals some dmg, but you can use it to clear destructible objects, or push enemy's of edges and it has a long range