Analyze a buy and hold deal

[Will Samsky]

I have been practicing analyzing some buy and hold deals in my area and came across this one that seems like a pretty good deal on a duplex. I just wanted to get some opinions on my numbers and anything I'm missing. Right now it is occupied without leases and I wouldn't be able to walk through until in contract to determine needed repairs but it most likely looks like some landscaping. I have no clue about expenses as this would be my first deal so I'm using 50% rule only as no financials are available. Asking price is 70,000 probably would offer 58ish and hopefully end up around 62k. Just looking to get info on my numbers and anything I may be overlooking.