Hi mate
serviceseeking.com.au is very confusing, when you start getting quotes with hourly and SQM based prices.
i have seen very good work from one of the guys who did with Henley, he recommended me http://www.nathanporterconcreting.com.au/
this guys has gone, exposed aggregated driveway and concerting on the sides and back, for around $6K, but that was around 8 months ago.
give him call, and see what you get from him,
so when is handover and final inspection? are you getting anyone to inspect on your behalf ?