I just set up two gen2's over my 90 and I'm still trying to run lower while I acclimate everything. I do a 5 hr peak photo period at 45% that does an hour at 14k, an hour at 18k, and the rest at 20k.
I'm also a blue guy and I also prefer better color to rapid growth. If you don't mind sharing more detail at some point, I'd be curious to know what your max is and how long your photoperiod is.