I wasn't going to say anything, but just have to say that vref+5...you nailed it!
BTW, people keep saying you'll be on standby at home...well they are partially correct, but only at night.
From dawn till last light you will be expected to be at the airport and unless you have a good reason, you will be expected to be requesting taxi clearance 30 minutes from accepting task.
Lots and lots of sitting around....you might not fly for weeks on end, only to be called at 2am to do a search 200nm off the coast in crap weather in pitch black conditions.
It isn't a job for someone to "Learn" to fly the 604, you'll have already have had to have done that somewhere else.