yeah they are definitely round bound wich most prolly doesn't help with their health. i m not ready for less plants and bigger pot, will add to much veg time to my rotations.
I think You do exceptionally well with your space! What are the dimensions of your tent again?
2x3x6
90x60x180
How about those Air pots? Could that be of any interest combining more air for roots without needing bigger pots?