10 yrs from now you will look back and realize that going back to school was probably the best decision you ever made. Besides marrying the woman I did, it was for me.
If you can get away with only using carry on luggage do it. If not, pack a pair underwear, socks and clean shirt in you back pack or brief case......sooner or later you will know why. And don't freak out over lost luggage, it will eventually show up.
If your company will approve the ticket, I suggest for the Perth trip to fly Emirates. They have a Houston direct to Dubai and a direct Dubai to Perth.