You has mostly been a liney on NSW then. AF/BF, TRs and doing line rectification jobs. You may be able to get in somewhere as a connie, but I doubt it will be easy. Your training and experience is nowhere near as extensive as a time served Apprentice or a time served RAF/ RN trades man further up the chain. If you are mechanical, you will have very limited sheetie time as well (if any). I do know because I used to work at Cottesmore until 7 years ago. If you had the modules, the CAA would still be looking at you doing 3 to 4 years minimum before a B licence would be allowed to be issued.. You have that little experience.
You could do the rest of your time on rotaries and do all the B modules for your path (AV or Mechanical). Record all the work you do and you could be laughing when you finally leave.. The industry will possibly pick up then.
This video may help you decide.
Rotary vs Jets.. 