Just starting out - FHA loan

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Hello all, 

I am not at the point where I am ready to pull any triggers but I am actively analyzing houses around my area. I decided I want to use an FHA loan and possibly house hack a duplex with it. My question is do most people use owner occupied FHA exclusively for duplexes or can you use it for single family properties (for investing purposes)? I am looking to get good cash flow because I am just starting out and need the cash flow to invest more in the future. Most say duplexes cash flow better, can anyone defend single families?

Thanks!