Should the Los Angeles minimum wage be $90/hr?

In discussion of minimum wage, the general idea seems to be that it should be enough to raise a family on a single income with.

Given that definition, the income necessary for a family of 4 in Los Angeles is $188,000 per year (per one web source, could be different. Let's assume this is correct)

Across 2080 work hours (52 weeks and 40 hours per week, that works out to roughly $90/hr ($113/hr if you support a 32 hour work week)

1) is this a reasonable definition of a minimum wage?

2) given the current minimum wage of $16.78, what time frame would you want to raise the minimum wage to this level?

3) what economic and social effects would you expect from this raise?

4) is a cost of living-based minimum wage a good idea at all?