Polar Ray cost has been bumped up to 20 as of the latest U9 patch notes, the chart still has it at 15.
I'm, still perusing, but that just hit me right off the bat.
EDIT: You're also not adding in any cost for maximize spell. The epic Ornamental Dagger is now exclusive so Maximize cost should be added back in for some of the time frame.
I would also like to see the timing of the spell cycles with clickies included, that would be great.
My sorc can't be copied to test atm so I can't really play with the gear and spells
EDIT 2: That was a fast correction to the chart, Polar Ray cost is now correct!