The WoA KAL Cargo v2 package uses flight plans from the summer of 2008 (approx 4 years old) by Rick Tam of the Alpha-India Group.
It calls for 2 A300 aircraft, 18 B747-400F aircraft and 2 B747-400PW aircraft. The fleet information from Wikipedia says the A300 aircraft have been phased out - and the airline has 24 B747-400 cargo aircraft, 1 B747-800 cargo aircraft and 1 B777F aircraft - so the WoA package actually has two too few Korean Air Cargo aircraft.
The cargo ramp in the FSX default airport has 10 Cargo spots. Google Earth imagery from Sept 2009 shows that ramp has a 1,000 foot deep extension which is not in FSX and has 32 cargo spots for B747 sized aircraft - which would be 33M if you sized them to match the wingspans correctly. The Google Earth images show the spots to be quite close for a cargo ramp - just 30 ft between the B747-400 wingtips. A quick check shows that 22 33M sized cargo spots will fit on the default ramp - a bit more than double the default.
@ PawPaw's house - near KADS, Addison, Texas, USA