The biggest problem that I see with this deck is that there is no point to the acceleration. Sure, you have lots of quanta, but what good is that when you don't have cards to play? 3 Golden Hourglass fixes that up nicely. You might want another 3 Sundials as well, because you might end up waiting a few too many turns to build up the 10 or so quanta that you need to play a Dragon, as the Quantum Pillars generate random quanta.
Also, as Baily18 said, you'll want to have a few Steals or Deflagrations handy to deal with troublesome permanents like Gravity Shield.
If you really wanted to play a Dragon Rush deck, then I would suggest Aether Mono (Phase Dragon spam with Dimensional Shields) or an Immolation deck (maybe one that sacrifices Photons and/or Sparks for fire quanta, and then spams Crimson Dragons -- supported by Deflagration, Fahrenheit, unupgraded Sundial + mark of Time or upgraded Sundial + mark of Light)
