Recording Disks Options

[zaaresh]

hi there,

i have two internal disks on my mac G4 dual 1.25 . , 120GB and 400GB.
the question is about an effective use of these two:

on which disk should i put respectively the System , Logoc pro, other progs like Battery 3 , Sound Files (Samples) and when i record audio and create Logic projectsm on which disk should that work best ?
whats your advice? we are just about to restore the whole G4 , thats why ....

thanks for your help!!

zaaresh