You may be right. Or they could win and receive instant processing and or compensation. Its a tough decision to make and can take time and money. But it may be worth it for some win or lose.
You have to be in it to win it or you have already lost.
Date applied
City/Council area
Online / Paper
Date received the acknowledgement email
Date of the Citizenship Test
Date of ceremony
Type of ceremony (Urgent/Normal)
Date applied: 27/03/2015
City/Council area: Randwick - Ceremony sponsored by a club in Sydney not council
Online / Paper: Online
Date received the acknowledgement email: 01/04/2015
Date of the Citizenship Test: 29/04/2015
Date of ceremony: 28/06/2015
Type of ceremony: Normal
Randwick tries to process within 3 months. But of course it depends how many there are. We got our letter beginning of May . We were also Randwick. Fortunately a club wanted to sponsor a ceremony and we were asked if we wanted to do it with them at the end of June. So we got our citizenship 2 months after our test.
I wouldn't plan to much until you get your visa approved. Anything can happen on each step of the process from both the employer and DIBP side of things. You maybe able to see your F1 on a visitors visa, but if the 457 isn't approved or falls through you can't work.
As mentioned it will have the information from the grant. You can also get free info from the VEVO system on the DIBP website. You can print out or direct the email to another recipient. Others can also access the site if they have the particulars of the grant. Best thing is it saves you $150 per label.
http://www.immi.gov.au/Services/Pages/vevo/vevo-overview.aspx
As you are on a 457 now you also have to have private health insurance if not covered on a reciprocal arrangement. If this is the case you should looking into adding your girlfriend and pregnancy services just in case. If you are on a reciprocal arrangement check to see what it will cover in your situation (likely covered in public hospital).