See, many of those American investors you are hving in nind (VC's, Angles, etc.) are holding tones of money in Singapore for tax engineering reasons (or even better, white hacking the IRA).
Hence, there are plenty of Singaporean businessmen and women who manages this money for them and have great relationships with them.
Getting traction in Singapore shall be the only worry of yours, once you got that right, and local key people are aware of your success, offers will fly by.