Hard Rock, in that case I think Cathay Cargo might be your best option IMHO. As far as I have heard through the grapevine, it is very difficult to get a left seat with most contract jobs. I heard that with Jade the possibility is to get a command on the B737 with Shenzhen Airlines and then later on (couple of years) going to the -400. With these kind of jobs, your best chances are to get a DEC if you have previous command time on type. Exceptions are made for command time on B74X (SINCargo).
Cathay Cargo has a rapid-command kind of deal, you need at least 6000TT and command-time on a B747.
Hope this helps.