Another tip, do not worry about losing your soul stash. There is a very, very easy place to grind up souls in the Painted World. Once you get access to that area all your soul worries are over and you can spend more time enjoying the game not worrying about trying to hang on to your souls, though admittedly, you can't get lost humanity back easily this way, not that that really matters either.
I used to farm the forest, but now that has been patched, I just spend 30 minutes to a hour bumping my level up by doing the undead burg bridge bug, which is tricking the dragon into coming, killing the npc's, you get the souls, sprint down, rest at the bonfire under the bridge, rinse and repeat. Not many souls, but nets you a few levels quickly.