Has mm2h been discontinued? I was in contact with an agent few months ago and did not get such info.
http://www.mm2h.gov.my/index.php/en/
http://www.mm2h.gov.my/index.php/en/
Are you sure you wouldn't be taxed for trading earnings in Singapore if they are your main source of income? I know capital gains taxes are in theory 0%, but in practice in some countries things change if they consider you an active trader and bullshit like that.