Owner finance / commercial building Triplex.

[Mike Gomez]

Good evening guys, I'm in need of some help double checking my numbers..... and seeing if the investment is worth executing before its too late. Me and the owner have been negotiating and below are the terms. I also attached some info on the property. It is a triplex with full occupancy. 3bd, ba 1651 sqft. 

Sales price 200K, 20K down, 8.5% @ 30 years, first 6 months of interest only payments, and balloon payment at 3 year mark. Which would be ideal to refinance out of , given that there are no issues with that... I'm just not sure anymore if the benefits outweigh the risks. Give it to me straight guys...I feel like I've been staring at numbers all week and now i'm confusing myself. Thank you in advance.