One minor point, that you're probably already well aware of...
First/Business Class is not offered on PER-AYQ. This flight is operated by QantasLink (Airlink/National Jet) 717-200s which are fitted with an all-economy (115/117Y) configuration. It's not an overly long flight, but it's something to consider
PER-ASP is also operated by QantasLink - so no First/Business.
Rgds