I know many operators don't have a 'minimum insurance requirement' for hours, they just have to deem you suitable to fly their aircraft safely. I know pilots who have trained up through their Bell 47's or Robinsons and have gotten a job flying Jetrangers in the UK with 200 helicopter hours, and about 20 or so Turbine.
If you can get your CPL(H), Turbine conversion and just build a few more hours, I think, with the responsible head you must have, you will find yourself employment. - Good luck !