House hacking duplex

[Riley Sanders]

Looking to purchase a duplex for around $210,000. I’ve been pre approved. I’m looking at around a $1,300 payment. I’m not sure how to find rental comps for duplexes in the market I’m looking at, as there’s not many duplexes in the area. Anyways, don’t think I’ll be able to cash flow on this property at the payment, but I’ll be able to get close to break even. Any market with higher rents, the properties are so high I’m not able to afford. This market is crazy and it’s trying to stop me from taking the next step. Is there any rule of thumb for looking at a regular house rent and converting to a duplex rent for comps?