If you go to the Far East forum and do a search for SIA you will come up with enough reading material to see you well into the New Year!
Sort out the wheat from the chaff and disregard about half and you'll have a fair idea.
Word of caution, in the past life for an expat. FO has not been that good as upgrade to Captain is virtually impossible, you would have to be on local terms for that.
If you just want five years of hours building on a 744F then SIA Cargo could be what you are looking for.