Let's see. Total cost for the equipment I have now plus the Fancy Hat of Your Party Loving You is 96,150 gp total. Actually, let's drop the wand of Power Word (Pain), making it a round 95,400. 12.5% of that would be 11,925 gp, and the XP cost (assuming no reduction there - does Lemmy have Legendary Artisan for -25%?) is 3,816. I can easily afford that with the bonus XP from Item Familiar. Cool.
With the rest of the money, I could buy another feat for my cohort (Ocular Spell for Immunity to magic on the ship?) and something fancy, like a Wand of Scorching Ray (CL 11), or Enervation, or something.