What a beautiful setup! I hope your seeds get delivered safely and your grow goes well! I'll follow along. Check my DWC grows out and tell me what you think.
Where are your air stones? Roots can be submerged in water but it has to be oxygenated well via air stones. Also growing DWC you will need a "sterile" system...no organics or living organisms as it will grow into something nasty. I used Dutch master ZONE to keep things sterile. Here is one of the DWC runs I did.
https://youtu.be/USYrKc8WKMA
Good luck :)
@Ketamine, You bet bud I have the air stones in the res and the res is sealed so all the fresh air goes threw the return water lines and the roots will be in paradise 😎