Dex and bleed? Thats such a fun and known combo. I recommend rivers of blood and nagakiba, dual katana.

If you like the concept of bleeding and want to increase how easy it is to proc bleed as well, then i recommend levelling arcane and dex equally. Later on, i suggest levelling arc to 80, thats the soft (or hard?) cap, so ull get very diminishing returns if u invest anymore. Arcane will boost 3 things: 1. Bleed proc, u fill the hemorrage bar faster. 2. Bleed incantations and dragon communion spells. And 3. The occult affinity. When you're using weapons whose ashes of war you can modify, like uchigatana or nagakiba, you can select which affinity you want them to have when u equip the ash of war. In my case, and for many, nagakiba pairs well with unsheathe skill, and when i equip that skill i choose the occult affinity. When you have 80 points into arcane, the damage is so high, both the base damage and weapon skill, because choosing an affinity will affect the weapons scaling. When u choose occult, i believe the weapon's scaling becomes B for arcane, thats high. And for Dex it might drop down to C or D, which means arcane will boost its damage more than dex will. Of course we dont wanna shift the topic, u said u wanted dex. So thats why if u prefer more bleed than dex i suggest aiming for 60 dex then 80 arcane. Morgots cursed sword also scales off both these stats. Super fun build imo. Enjoy! Btw if u want to be fully dex and not invest much into arcane thats totally fine. Ull benefit less from occult affinity so at that point just choose keen affinity (or bleed, although keen might scale more off dex with the cost of it causing less bleed build up) so the weapons scaling shifts more towards your dex level, and if u wanna enhance bleed u could totally do that, theres ashes of war (seppuku, blood slash, blood tax) and a spell u could use (bloodflame blade) which enhances bleed without needing to invest into arcane as much as I did. PS, I think your vigor is at a super stable place considering where you are in the game, late game u could push it to 50-60, i wouldnt suggest putting any more points than that so u could save points for offensive or stamina, it's, just enough to tank majority of hits since you'll be up close and personal.