boots are tricky bro, you really want to get GOOD boots that fit YOU. the main hurt point is price, a $300 pair of full tilts in the US/Canada will cost you $800 in australia (not jk, srs)... personally im a big fan of custom foot beds, but you obviously need someone to do that for you, so prep ur anus for a $150 custom sole purchase.
what i would suggest is finding boots that fit you really fucking well (in australia), buy them and get them fitted, buy custom foot beds etc. drop the cash this once, and after a few seasons once they bucket out buy the same boots online for an nth of the price online.