Need help and guidance

Hi Everyone!

My name is Francis and I need help about the financial requirements before I lodge my student visa application.

Status:
CoE - check! I have these already and enrolled
IELTS - check! I have the results too.

Question #1: Which is best to lodge a Visa Application? Via Online or Post Mail? Which is faster and reliable?

Question #2: My "show money" is at it's 2nd month on my account. Is it OK to get the bank statement now and lodge my application or should I really wait for it to age for 3 months?

Question #3: Also I have 2 Australian Citizen brothers living in Queensland where my School is located, I will also stay with them. If I ask them for an Affidavit of Support backed with bank statements and payslips is it OK to lodge my application now even though the "show money" is not aged at 3 months yet? Do you think my visa will get approved?

I hope someone can help me. If you can add me on Skype: francisdiola it's much appreciated so that it's much easier to talk and easy for my to understand.

Thank You! More power mga Pinoys!

Francis