Here is the numbers.What do you think

First short sale. Would you pros take a look and see if i am headed in the right direction.

ARV $136,000

Mortgage Balance 104,000
In rears 4,200
Realtor fee,s 8,100

Repairs /Mortgage fee,s 23,418
Holding costs/water and sewer
Elec/Dumpsters/ Contingencies

Total mortgage and expenses $139,718

arv minus expenses -3,318.00

Am i thinking correctly, asking the bank to short sale for $82,500