You didn't do the numbers, so I went looking for properties in the area...
In NoHo (if anyone is looking for an investment) there is this: [0]
48 units, 20,000 square feet, cost of 26,000,000USD.
According to Zillow [1], apartments in that building go for roughly 3000USD a month -> 144000USD per month -> ~1.8 million USD a year.
So, if we take those numbers and apply it to new construction, 20 floors, 20,000 sq ft rentable space per floor (I'm assuming that's what you meant by plate).
Given real-estate costs in the area we can expect to spend 16 million [1], just for land. To get a contiguous acre (~40000 sq feet) on the island would probably cost us more.
Next, cost for construction would be something like 1000USD per sq ft [3], so ~400 million USD for all 20 floors.
If we, like the above mentioned apartment, have ~400 sq ft apartments at 3000USD a month, we would have 960 units total, and ~2.8 million in income per month.
I have no idea what the monthly payments for utilities, insurance, etc. would be, not to mention servicing a half billion dollar loan. The numbers are all sourced from non-vetted sources, so we could probably multiply costs by 3 and have relatively accurate picture of something like this.
[0] http://www.showcase.com/property/302-Mott-Street/New-York/Ne...
[1] https://www.zillow.com/homes/302-Mott-St-Apt-25,-New-York,-N...
[2] https://pocketsense.com/average-acre-land-new-york-7488311.h...
[3] https://therealdeal.com/issues_articles/nycs-construction-cr...