This is only a best guess, but I would say 2 weeks of service and 2 weeks of EP's. Also a guess but I would say service training would be in Sydney and EP's in Melbourne but possible both in either MEL or SYD as the facilities exist. If employed into the MEL base, I would imagine any training conducted in SYD for MEL based crew would offer hotel, transport, flights and allowances under the applicable award the new crew member is employed.
Training hours are generally 9 to 5 ish (could start earlier or later but generally 8 hour days) although sometimes with earlier starts for EP training due to availability of facilities along side recurrent EP training days.
Rereading my last post, it should have said three days later for those trips.