As post above, 4:30hr should be OK, even with some delay.
If OOL-SYD-HNL on JQ is 1 ticket they may interline baggage, but do not expect much. Worth asking at OOL.
You will have to make your own way between terminals, by free bus or train (pay $)
Airport info SYDNEY (SYD) - amenities, transfers, transport Click to open the wiki