Tacktila. I'm not well up on the cost of living for a large-ish family, but you can rely on "New Resident" to give you a fair idea. Remember that its figures are CI Dollars, not US. Your US$salary is CI$120K; I don't know what currency your expense estimates are in; you might need to adjust them. $1,500 p.m. for a housemaid - well, you'd need to decide whether you want to employ one yourself full-time or to use an agency; the agency we use has just raised its charge to $12 an hour, of which the employee gets about $7. Your rental will depend on how big a place you want, and whether a flat or a house. Plus electricity, sewage and water, TV, phone and computer. Car(s)Â - what make and year... Private school - decide whether US or British system, and remember the cost is more than just the bare fees. Sports for every member of the family... entertainment costs.
$120K is a pretty good wage, but, the kids alone will set you back quite a bit. Also, you'll lose a few thousand for compulsory pension contribution. Your employer may or may not pay half your medical insurance.
If I were in your shoes, I'd want to fly out here to suss the place out - depending on where you'd be coming from. If you're still in DR, you could easily come via Miami.