Some advice:
Based on weapons you've crafted, it seems you lean more toward heavier, but not too slow weapons like Halberds and Greatswords. Claymore and Halberd are good options, but you may also want to look into the Gargoyle Halberd (it's a rare drop off the gargoyles, and since there's a limited number of spawns for them, the only sure way to farm it is by killing the first gargoyle on the roof, quitting then reloading if you don't get the drop). It has a different R1 attack than the Halberd though if you prefer the thrust attack (the R1 is more like the Lucerne or Scythe).
You have basically two options from where you want to go from here: Get Faith up to 50 (for max miracle damage) and make a Divine or Occult Halberd (some of your Str and Dex points will be wasted though, since the min reqs for Halberds are only 16/12). OR (and this option will easily out-damage your Chaos Halberd), is to make it a +15 Normal Gargoyle Halberd, and then use Darkmoon Blade and Sunlight Blade to enchant it. For this build, you'll have to sacrifice some Vit or End to get your stats to a good level. Halberds have D/C scaling (or D/D for Gargoyle Halberd), so a good split may be 20 Str/30 Dex, and then the rest into Faith to improve your Wrath of God and weapon enchant damage.
Fiddle around with this calculator to see what would give you the best damage for a Normal Halberd:
https://sites.google.com/site/darksoulstats/dark-souls-calculators/normal
Here's a sample build at SL 121:
http://darksouls.itsthatguy.com/?c=Q2xlcmljLDEyMSw0MCwxNiw0MCwyMCwzMCwxMSwxMCwzNg==
If you had stopped at 16 Str, and pushed Dex to 34, it would've yielded slightly more damage (only talking of like 8 AR, not a big deal). You can bring that up to SL 125 if you want to get Faith to 40 so you could still use Divine/Occult weapons at their full potential with the same build (scaling slows down considerably on weapons after 40)
Alternatively, if you prefer Claymores, bump up Str to 36, and keep Dex at 14 for the same point investment. For Str and Dex, the best returns in scaling are between 30 -> 40 usually. So even though Claymores are C/C in scaling, you get more damage by pumping one of the stats higher (up to 40), than keeping both the same at 25.
2nd edit - Just noticed you could also try and meet the requirements for Black Knight Great Axe. 36 Str/18 Dex.