You could try Moogera Dam. It's probably a bit further than an hour, although I haven't been out there for several years, some of our club members go there on a regular basis. It is reasonably dark and the mountains tend to block the coast and the Brisbane light dome is a reasonable distance away.
If you want company, try contacting the Brisbane Astronomical Society at
info@bas.asn.au. Someone might be heading out this weekend.
Cheers
Tony