If you pick a school that's a registered training organisation (RTO) you'll be in good shape as well. They are required to construct a full syllabus meaning you'll be receiving extremely professional training. All instructors are required to hold Certificate IVs in Training & Assessment (it may be called something different now), meaning you will receive a high standard of instruction.
Not all airports have landing fees - Redcliffe & Caboolture are two airfields in the Brisbane area that are free from such fees. This will save you a few hundred dollars during your GFPT training.