Hey there friend! Looking great & wonderful strain selection. I would recommend slightly adjusting your PH down to 6.1 to correct the issues of slowly building up lock out. I would recommend reading this article it is a GREAT read about PH & has a beautiful graph to demonstrate it.
https://autoflowerseedshop.com/cannabis-ph-chart-guide/
If you ever have any questions or require any help please feel free to ask. Just follow my profile & DM me is all I ask in return :)