Hi, I'm located in Yarraville, so if you're willing to make it to the inner-west I'm more than happy for you to use my 25mbps/5mbps NBN to upload your 5Gb file twice with your being present. Depending on how long it takes, there are a couple of lovely coffee shops nearby, or the Village surrounding the Sun Theatre to relax in.
I imagine that you'll simply need to get on to my network, log-in, upload and wait. My upload speed is relatively good (compared to what I've been used to in the past) so, luck permitting, it won't take all day.
Congratulations on completing your film in any case. Please contact me if you have questions.