Boas,
Leave them all with the parents.
They will eat the first or second spwan couse of inexperience after that they will eat them if they fell dangerous. Give them same calm time after spwan.
Bom dia,
If u want "one large cichlid to put into something like a 75 gallon that will live there by itself so I want it to have lots of personality and be somewhat aggresive", temporalis isn´the way, go with a devil.