Duplex in Temple City, CA did I analyze it correctly?

[Kevin Linh]

Hello BP, I found a Duplex in Temple City, CA I'm curious if I analyzed the deal correctly. I'm going to try and see if the owner will do seller finance. 

Front house, 3Br/1 & 1/2 Ba

Back house, 1BR/1BA

1,843 sq ft. 

5,663 sq ft. lot

Sale $650,000

8% interest = $52,000

Total = $702,000/30= 23400/12= $1950 a month

$1950+650(tax)+180(insurance)+$200(repair funds)= $2980

Rental comps for 3Br/2Ba $2200-$2500

1Br/1Ba $1200-$1600

With conservative rent income $2200+1200=$3400

Cash flow $3400-2980=$420 a month

Let me know what you guys think and tell me if I did anything wrong or if I need to increase or decrease any of my numbers. 

Thanks again guys for the help. 

Kevin