you could try for a job as an airborne computer operator with a survey company. I know one company crying out for crew right now. If you get on well with the pilot im sure you'd be able to do a bit of ferry here and there, maybe log 5 or 6 hours a week, possibly more until you get your 500TT for insurance. If the CP likes you you should get a flying job easily enough.
Operator pay is only about $1400 a week +expenses but its prob a bit better than some of the charter jobs pay and gives you good experience into the world of commercial aviation.