Very nice setup. This is more of a general question for owners of TJ07 and 2 rads in the lower compartment, but in terms of fan combinations, I'm wondering which is better.

Option1: This is the way it's currently configured. The PA120.2 gets slightly less fresh air.
f-> PA120.3 PA120.2 ->f
f-> PA120.3 PA120.2 ->f
f-> PA120.3 PSU <-

Option2: This could help cool the upper compartment more. Another advantage is that both the PA120.3 and PA120.2 get fresh air. But wondering if the fans lessen the efficiency of each other and whether the turbulance makes noise.
f-> PA120.3 PA120.2 <-f
f-> PA120.3 PA120.2 <-f
f-> PA120.3 PSU <-

Option3: Negative pressure case. Advantage is the fan noise will be slightly lower as it's muffled. It pulls air from the upper compartment so helps airflow. Disadvantage is that the air isn't as cool as options 1 and 2.
PA120.3<-f f->PA120.2
PA120.3<-f f->PA120.2
PA120.3<-f PSU <-