I have been trying to get an interview for a year now - I have two type ratings both in glass cockpit airplanes which I thought would help and 350 multi. NOT!
All they care about is multi time - I now have about 430 multi but I am buying a block in an apache anyway. 500 is the minimum as many recruiters have told me.
If you want advice, get a job flying a multi-engine airplane. You wont get to a commuter without it (at least not for a few years). Trust me, I made the same mistake and then got layed off to boot : )
FWIW