I sincerely hope that you are hiring a qualified service to upkeep this system once it finally gets wet. From weekly sock changes/blasting, monthly sock bleaching, to weekly water changing, to multiple filter media replacement/ algae cleaning, weekly parameter testing and plant trimming, unless you are retired, you have established a full time position for yourself tank side.
If these systems are not up-kept, each and every one of them will become a nightmare (clogged filter parts bogging flow, unkept socks leaching waste back into system/overflowing, etc).
FWIW, please order yourself at least 24 socks, because having managed a muti-sock system for about 3 years, any less than 4 replacements per hole will be tedious at best.
If all of these parts are properly maintained though, you will have yourself a seriously magnificent setup. Reminds me of what they have setup for the large Amazon biotope at the Georgia aquarium.