lol good change
check for kinks in the rails in the engine bay or any creases in the structural parts of the car... like around the strut towers. Obviously there are a lot of creases and so forth there normally, but its should be pretty much symetrical so check both sides... if ones different to the other look into it.
-HICAS light is normally due to aftermarket steering wheels. If its a stock wheel it could have a HICAS stop kit on it so check that
-Air Con make sure it works. If it doesnt and it has an aftermarket stereo or gauges it could be because the facia was taken off and put back on wrong crimping the hose that helps measure the temp in the car OR of course it just needs some good ol gas The noise switching from head to feet is usually the vent redirecting the air and isnt really an issue.
-Boot rust. Places they seem to be prone to rust are the bottom of the rear gaurds near the back of the wheel arches and inside the boot near that same area. you actually need to lift up the carpet and feel down the inside.
Apart from that, just the usual shit... dont get RACV to check it out they wont know what theyre looking at and like to charge 4x the amount to look at them.