I agree with Saint. a. it is not legal to rent a flat while on a tourist visa (apart from
Serviced Apartments which are pricey) and b. you should really not uproot your family. The odds of finding a job if you are not citizen or PR are currently very low unless you are SENIOR SENIOR management with highly regarded qualification. You might find a job but MOM might not grant your employment pass.
@all: A friend of mine with MPhil from the LSE and plenty of working experience approached several job agencies (Michael Page, Morgan McKinley...) wanting to submit his CV for middle office management positions in finance. They all declined even taking him on their books as apparently MOM is really tightening the screws on EPs. My mate just told me this morning.