Nineinchsnail.
The basic flight pay for an FO at Tiger is SGD 64000 annually - about SGD 5333 per month. The flight pay? SGD 75.75 per hour and you can expect to fly 90 plus per month.
I think this is a bit more than your initial estimate. Not a good time if you have to send back money to the US
Rents in Singapore a bit of a bummer - about sgd 2000 - 3000, but tax for an FO is around 5 - 8%
IMHO - not the best, but not bad either.