There are a couple of flying schools at Parafield that have hire and fly aircraft. Try Forsyth aviation as they have cessnas I believe. As for where to fly to in a hour or two probably south to the murray mouth/coorong then coastal west to cape jervious and up the coast to outer harbour/parafield. Fly from Aldinga beach to OHB at 500' (a common practice to stay under Adelaide flight path) off shore. I have done this route many times when I have visitors never had any complaints yet.