Duplex Deal or No Deal?

[Stanley H.]

Guys,

I would like to know your opinion on this duplex deal i am planning to make an offer on.

its a 2/1 up and down in a good area. rent estimate for the area are $650 , i predict the upper will go easily for 500 and lower for 800.

Price:- $83.9k 

Taxes:-$2100, 175 per month

Rent:- $1350 (conservative)

insurance:- $70

management:-$130 (10%)

maintenance(7%) $91

vacancy rate:- (8%) $108

cash flow: $427

cash on cash financed:- 27.9%

cap rate:- 10.4%

It looks good on paper to me what are the things I am missing here?