RandosaurusRex,
The ADFA DEO question is a very personal thing to answer. They both will get you onto pilots course, one 3 years later than the other, but with a degree in hand.
You've got to weigh it up yourself, its not really something anyone else can answer for you.
Perhaps think of things like am I mature enough to tackle DEO, do I need a few years at ADFA to further develop such traits, can I stand waiting 3 years before beginning pilots course
etc.
I had to make the same decision, and have no regrets going DEO.
Cheers
Nick