For full redundancy you could setup LACP from each stack to each of the SRX's
so stack has 2 ports to SRX A in LACP
stack has 2 ports to SRX B in second LACP
For full redundancy you could setup LACP from each stack to each of the SRX's
so stack has 2 ports to SRX A in LACP
stack has 2 ports to SRX B in second LACP