Domestic transfer should be OK, if they allow it, but if QF500 inbound is late, you're screwed. And if you make it, chances are bags won't.
For the international connection, I'd estimate the time for each activity
Inbound may be 10 mins late
Collect bags - maybe 20-30 mins
To go to re-check-in, 15 mins (use machines & bag drop)
Security and immigration - think of a number. Allow 20 mins
Within intl - 10 mins
Say, 60-70 mins.
Boarding closes say 20 mins prior to departure (may be more or less?). So of your 115 minutes connection, you have 30-40 mins to 'spare'. I'd never do that, or rather, I wouldn't do that domestic connection prior to an international flight.