Looking at first deal to be a house hack.

[Dominic Punzo]

So my fiancé and I are currently looking into house hacking our first duplex. Now I've run the numbers and my mortgage should come out to about $600 a month and the other side is currently rented out for $550. I think I can get that up to $600 bc market rents in that area are about 650-700. With this we plan on budgeting and saving $300 a month to put alway for expenses and vacancy. We are currently paying $900 a month where we are living so I know it will save us money but my question is does this seem like a good first deal for a house hack? It is hard for me to tell since most of the calculators will tell me I will lose money bc I'm not counting the second side and just wanted to get people's thoughts on all of this? Thank you in advance for everyone that replies and I apologize for the long comment.