How much should I offer for this Multi-Family?

[Hunter Estess]

Hello, 

The current asking price of a 22-unit complex is $1,200,000.  The Yearly income is $147,204 and the expenses are $32,808(Insurance, Taxes, and Utilities).  If I want to include a 10% vacancy($-14,720) and 10% repair($-14,720) bringing my total expenses to $62,248.  

What should I offer for the property?  I have not included any debt payments of management(me) fees?