What would be an acceptable wage for a B1 in the gulf
Acceptable to who?
Most big companies pay the same give or take - Gulf Ar and Qatar pay the best but the others are not that far behind. All pay around 20,000 AED a month ($5500 US)
The big issue is accommodation - it s very expensive. Unless the company supplies (and pays for fully) the sort of accommodation you are looking for (and I assume with 2 kids you want a villa) then be very careful of taking any job out here.
I know several guys who are topping up their rent out of basic salary as the company allowance doesn't go far enough to get them the type (and quality) of place they want.