what's wrong with pigaino, instead of paw?
Θα πηγαίνω = I will be going, Μέλλοντας Εξακολουθητικός (Future Continuous)
Θα πάω = I will go, Μέλλοντας Στιγμιαίος (Future Simple).
It's a tense difference. ^.^
Is it just my memory, or did we only learn future simple by now?
Whats wrong with θα πάω στην Αυστραλία?
Nothing. That's one of the accepted alternatives.
(Well, with capital Θα at the beginning of the sentence, but that shouldn't make a difference in whether it was accepted or not.)