I agree, it seems to be an ok design. You seem to have the tie-down options covered pretty good.
After the burn is over, you will know if it was truly a good plan or not.
There are many weather/materials/planning/random-crap factors that can influence the success or failure of a project at Burning Man.
In 2010 we had rain on the Monday, that was "interesting". Shade that could handle the wind, failed due to the weight of water... Electronics failed. Burners improvised and kept burning.
2007, 8 & 9 had dust storms every day, and huge wind.
2011 was weird and nerve racking - since it was so nice, kept expecting "the storm" and it just didn't happen.
Still plan for huge wind and you probably will be fine.