Congratulations Mt Gambier is quite nice and green and definitely cooler than Adelaide. Glenelg River is not far from there and has good fishing. Good friends of mine have a shack there and often go fishing on their breaks with the kids. They are both primary school teachers and used to lived there for a long time but moved to Adelaide about 10 years ago. There are at least two public Primary schools there, not sure about High Schools tho.