High experience levels not available?
FHLL, I would have thought that the demise of the C130H, which I presume is currently being flown by a number of highly experienced crew, will release those crew to be posted into other squadrons. Surely, as was the case with the B707, some of those highly experienced pilots will be used in the introduction of the C27 into RAAF service. Obviously the FE's will not be used in the C27 and, if required, will be employed in the maritime role.
As far as pilot progression due to being a 2 pilot aircraft it did not seem to be a problem on the C130 which has always been a 2 pilot aircraft, albiet assisted by the FE until the J model.
I hope your concerns prove to be unfounded and that the C27 proves to be a successful replacement for the venerable 'Boo.