I'm not a Stax player, but there are a few things that just leap out at me from looking over your list.
1. If you're playing 9 artifact mana and 4 Null Rod main deck, you'll probably want a full complement of 4 Bazaar to filter out dead cards.
2. I don't even really know that Mindlock Orb/Ghost Quarter are worth it, to be honest. I think I would rather play a traditional Red stax deck w/ 4 Goblin Welders and just splash green for Crop Rotation into Strip. Green also opens up Fastbond, a no-brainer.
3. If you stick with blue, what about adding Tinker + Robot for additional win condition? Obviously you can filter either if they're not useful w/ Bazaar. (edit: never mind, just realized Orb effects both players; wait, no, re-edit: besides filtering dead cards you can just Tinker-sac the Orb itself. ha)
4. Worth reading if you haven't already:
Vroman's Bazaar tutorial.