Looking for max magic weapon (RESOLVED...sort of)

Down to three items and one upgrade for knights honor and upgrade achievements. Besides the blue slab I just need Darkmoon Bow, false Greatsword of Artorias, and Smough's Hammer.

Gamertag is Guy_McDude and level is around 170.

Edit: Actually I don't need a blue slab, a max magic weapon would be fine and I could give it right back.

I wouldn't usually bump myself but there have been two major edits on this that more or less are worth it being a new topic. So rather than deleting the old one and making a new one I just thought I'd float it. Mods let me know if you object.