Preparation for Flight School + Conversion from RA-Aus (South Australia)

[PLTDR]

I've obtained my RA-Aus pilot certificate and will be completing my navigation endorsement by the end of the year.
I'm looking to convert my license to RPL and continue training from there towards a PPL or further.

Does anyone have any recommendations on one school over another at Parafield Airport?
Any guides or red-flags to consider in picking a flight school?
Also any recommendations also on pre-reading/study/other tasks before starting on the transition process from RA-Aus to general aviation?

Thanks for your help.