Starting out-help me-my situation

[Becky Smith]

My situation

My husband and I are in our early 20's and we have a young child. I manage the apartment complex we live at so we get free rent and are able to save. My dad manages/owns a large property management company (so he would be my real estate agent). We have 11k right now and want to save for maybe another 6 month - a year and get up to 20k. We both have OK credit (660 approximately) and I am a stay at home mom, and he makes about $2,500 a month. We really want to get a duplex... what are our options?? What would be the most beneficial?  Living in 1 side for a year? Saving up enough to do an investment loan? What would be the biggest tax benefit? Could we even qualify for any loans? What can we afford ? And any other info would be awesome.