You don't need a return ticket but you may be asked (highly unlikely) to show that you have sufficient funds to leave. I'd suggest not mentioning that you're looking for work when you arrive at the Immigration point with your disembarkation card - your purpose of visit is tourism of course.
The old Duck Inn (it's got a new name now) is a good starting point to meet aviation people. Go out of the airport building, turn right and it's five minute's walk on the left, looking straight over the airfield.