SHort SALE, URGENT HELP NEEDED, What offer should I put down?

[Bola Fdipe]

SHort SALE, URGENT HELP NEEDED, What offer should I put down?

My husband and I are looking for a 2-3 family home to live in and rent the other floor. 

Been looking for a while in the cities of Newark, East Orange,  NEW JERSEY

Our mortgage loan is $361, 000

We found one at in  (Clinton Hill Section in Newark, NJ)

$319,900

We were going to offer 289, but did not realize it was a short sale. 

Based on market, nearby homes "sold as is" what should we offer?