Forget it...
If you are a self sponsered student with a CPL/IR (Frozen ATPL), your chances of getting a job is very slim. With barely 250 hours no one is going to even give you a 2nd look. The possibilty of someone getting employed is less than 20%. Thats 2 person for every 10(The other 8 can start selling shoes at BATA of Colgate at Guardian pharmacy)!
Sorry for sounding very negative but thats the raelity. In Singapore, we have tons of unemployed pilots. No joke. Its a very real and serious problem. Spend all your or your parents hard earned cash and no jobs.
SIA will hire foreign FO from Malaysia. No need to serve NS. Locals serve NS, pay for licence only to be told you have no X-factor! Absolutely hilarious.
Many Singaporeans now working oversesas now. 90% not as airline pilots, but as instructors, aerial work or charter.
One piece of advice, if you have friends interested to do flying:
1) Ask them to have min 5 Os with all Bs and above
2) At least a poly dip
3) Then try cadet programme
If you can't make it, don't waste time. Go pursue something else. No point spend so much money only to be heartbroken!
All the best.