Negative cash flow on my first duplex property house hack

[Kobey Heberling]

Hi everyone, I'm looking to buy my first multi family in the coming months and have read all about cash flow, 1% and 50% rule. I am still wondering is it bad deal if i buy a duplex that covers most of the mortgage but not all of it? For example, the mortgage is $1000 and i can collect rent for $750, leaving me to pay the remaining $250 for the mortgage plus utilities. Ideally we all want positive cash flow but with house hacking, i feel like that will be harder to obtain also living in the property. 

I am looking for opinions for those of you who have come before me if y'all would do something like that. Thanks