Given that the quantum pillars there will only produce 3 types of quanta you can use, and the high cost of the dragons, you'll be lucky to get a dragon out before you're dead. Also, given that since purify will keep your creatures alive from liquid shadow, the hp of the dragon is only needed to resist opposing removal. Anyway, mostly for quanta balance reasons I'd suggest something much simpler like this:
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The dragons hit just as hard as the light ones, and purify will keep them from dying to liquid shadow. The darkness pillars and mark of water means you won't be quanta screwed like you will be 99% of the time with the quantum pillar build. You could even try to do it with water pillars, water dragons, and a darkness mark, but I don't think that the quanta balance would work as well there, and the only reason I'd even consider that would be if you upgraded the dragons, the water ones have 13 attack, but unupgraded, I'd definitely do it with darkness dragons.
edit: if you wanted to try Chapuz' idea, it could look something like this:
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I don't like the quanta balance on that one as much as the darkness/water one, but hopefully you'll get some ideas for how you want to build it yourself.