Real estate investment is all about the numbers.
I mention this because I just don't see how a rent of $4000 per month equals $200,000 in rental revenue per year.
By my calculation, that's (at most!) $48,000 a year in gross rents. Even in Ethiopia, which has 13 months in year, you won't get to $200,000 year! :)
You won't get to keep all that, there is property tax, insurance, property management, repairs, set asides for future repairs, some utilities, and you can't count on it renting out 12 months every year, either.
If you clear $4,000,000 on the sale of this property (to be very conservative) and invested it in Vanguard VTSAX and VTIAX, you could count on an income of $160,000 a year at a very conservative 4% safe withdrawal rate. If you clear more, even better.
The only way this would make more money by renting would be if it appreciated in value substantially and then you sold it off. Unless you really know that real estate market, that's a speculation not an investment.
So, unless you've made some really important typos on the numbers you presented to us, selling is the clear financial choice.
Unless I had a burning need to live in that specific house in a few years, I would sell.