@bigd forgive me, strictly linux user so bear with me
AIO uses this plotter so it should be on your system already:
https://github.com/BurstTools/BurstSoftware
wplotgenerator [account id] [start nonce] [number of nonces] [stagger size] [threads] {/async}
to get the account id i would refer to existing plot file names which take the form of [account id] _ [start nonce] _ [number of nonces] _ [stagger size]
the start nonce i would choose something very far from what AIO wallet has plotted already to avoid overlap
for number of nonce i generally work off the idea of 4096 is a GB of disk space
stagger size reflects memory use during plotting (4096 is still a GB)
async writing works well for me to speed up plotting on network drives (using nfsd in linux)