What in particular would you like my opinion on? There's quite a lot going on in 4 pages but I'm happy to throw my 2 cents in if there's something specific you want me to address. Trust me I can look at any grow including my own and think of a handful of things that could benefit from a change...
‘it’s not so much the gph you need a certain psi to use open flow octabubblers (No gph inserts). These are meant to operate at 20-60psi with around 40psi being the sweet spot for me in my setup to get even distribution. Since the bubblers are gutted and there’s no flow control you need...