Apologies for the lengthy post below, but wanted to include as many pertinent details as possible. 

The seller gets a quick transaction and I (the buyer) get a property below market value.

Given that I'll be house hacking my realtor created a list that focused on duplexes but giving the cost of CapEx I can't really see duplexes within my price range, (below $115k), making enough rental income to sustain and cash flow positive long term.

These Realtors have earned the designation from The National Association of Realtors and specialize in representing international buyers purchasing in the US. realtor dot com has a filter to find these agents.

How to avoid that is... see my copy paste below in italics. 

He is willing to compromise on an sell price way below of 350-375K..

I'll leave it at that.Can somebody analyze the work below for me and let me know if this is a potentially good deal?

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Hey Rich,Couple comments on your questions/ideas below:- RUBS are a great way to have tenants help with some utility costs, but I would say that it's entirely market dependent.

Are you looking below 50 units or larger like 100+?