There is no pay difference between 777 and 787, or any other fleets.
The 777 probably has more monthly pay as it is mostly longhaul and heavy crews factor the flight time but get paid for all.........so you may be logging 75 hours but paid for 90.
Commutable????? Depends on your definition and expectations.
I am flying with an Italian pilot....he likes it here and says he makes it home more from Qatar then he did when working for his previous Italian airline.
So it is possible to go home a lot but wouldn't call it truly commuting.
BKK currently has 4 flights a day.....but usually very full.
As a pilot you at least have option for jumpseat so usually can get on