Eagle 18th
You are very unlikely to find such a diverse course, you will however find elements of your requirements in, as mentioned above IATA, Dangerous Goods training and NVQ's. There isn't really any easy way to achieve this other than have one of the training organisations tailor a course for you.
You might consider AVTECH 2000 which is an open learning course and will cover a good deal of the above, however, I'd recommend you vet the materials very carefully to ensure they meet your requirements. Also, as JAROPS1 now requires operational personnel to be trained to the ICAO 7192 D3 Dispatcher/Ops officer Syllabus you have a new requirement to meet since last Septemeber (See the Flight Dispatcher/Ops/Crewing forum for loads of discussion on the matter) Glasgow College of Nautical Studies do an open learning course to the ICAO Syllabus which might be trailored to meet a good portion of your requirements for Air Law, W&B.
Failing all of the above, you might be able to find other major carriers, such as LH or BA may be able to assist with the AWB/Grnd handling elements of your need.
Good Luck with it.