Multi Family Income Goals

[Raymond Hill]

Hello, 

My Fiancee and I are starting the process to find and purchase a multi family. We want to know, what type of systems should we use to analyze if the property will produce cash flow, what others are using to evaluate multi family properties. Lastly, the amount of money per month lets say for a 3 family property on average should we be making that is "considered" a great investment

P.S. What is the best financial path to obtain the property. I.E. FHA, Conventional, Lease to Own, Seller Finance.