Fair enough. I've always firmly believed Hercs are a good option for the IAC, even used ones. The Austrian solution is certainly worth examining.
Just bear in mind that with 40-50 years old aircraft, there will be availability/reliability problems. I would suggest a thorough overhaul and upgrade similar to what the South Africans got from Marshalls for their B-models gifted from the US - including a glass cockpit and avionics, Thales Topdeck in that case, to eliminate the navigator and make them compliant with international ATC requirements. They would also need a new wingbox and probably other work as well - plumbing, piping and wiring, new cargo handling equipment, self-protection IR jammers and chaff/flare kits, etc. And a reliable source of spares - another headache with old Hercs these days - Poland is spending about $19 million each on their US-gifted E-models for all this. Any old Hercs will need a lot of constant work - think of an old Triumph motorcycle - no modern computer based moniotring systems. Doesn't mean it won't work. Consider what you get for what you pay for balanced with what you need it to do.
* $25M for a new C-295, more for a C-27J; limited range and payload, good for 20+ years
* $25-30M each for an elderly reburbished 130; 2-3 required to have one available - good for about 10 years, not much longer
* $65M for a new C-130J-30, with no delivery before about 2011; very reliable and capable, good for 20-30 years
* $90M to buy a new A400, not available before about 2013 or later; will be a great aircraft, may be ways to reduce procurement, operating and maitenance costs through EU partnerships - EAG, etc. - good for 20-30 years.
There are probably other options out there as well, IL76 for instance, or economical and flexible jet combis like the B-737QC or even the A-319/320 suggested by GOC.