Is it worth it? First property

[Krys L Burke]

First let me start by apologizing if I leave out any critical info. 

The property is a duplex, 3 br top and 3 br bottom. Tenant occupies lower unit and has been there 10+ years with perfect rental history 

Top unit all redone except needs modern windows in a couple rooms. 100+ year old building. 

Quals for FHA.

 The house is valued at 106,000, the seller asked 125, I offered 120 (basically to hold a spot and get some advice). 6% closing costs to me. 

Tenant pays 825, heat and hot water included (will be raised). and i know when I move out, I can get 1000+ for the upstairs. 

I honestly don't plan to sell, so the value of the home would be just for refinance purposes, correct? 

To me, the numbers add up in the long run, but I wanna know if I'm skipping something.