Also, is commuting a possibility with this job?
Yes, it is possible, pending where you live exactly. Your profile says USA so it should not be a problem, after the last flight before your home leave jump on the first flight for the States. Between the pax and cargo flights, there is quite a lot of possibilities. You have to warned several days in advance due to TSA stupidity (correction security) regulations, but for the rest it is quite straigth forward. One of the nice point of working for China.
On A340 or B744, it may be possible to be based in the States, but I don't know the details.
Hopes to see you around soon