Upgrade the Death, Entropy, and Aether dragons, but leave the rest unupgraded. Those ones have the best damage to cost ratio. Also, you could probably take out the Shields and Steals. This deck is based on DAMAGE, so shields, which slow you down and drain precious quanta, are very bad. You should probably run Explosions, and take out the Pulverizer. It's nice, but it also eats up quantum for your dragons. Explosions are low cost and take out stalling shields like Diss and Dim Shields/Fields.
My two cents.