If the interest rate are close, then you should pay off the primary. 

Even if you don't decide to keep it in the long run, it's an appreciating asset you can make money off of.

I was in national construction for 5+ years I'm not afraid of a small contractor who's ripping you guys off 

There are plenty of rip offs in the investment world.  

That kitchen looks good but needs more stuff so families can cook and eat there.I think you guy look good in the photos, but it can be a turn off to prospective guests so I would remove those.

And all properties need to be managed and supervised numerous times per year; giving residents the idea that no one is watching and/or no one cares will be a sure recipe for disaster. 

The real skill is understanding the variability and risk in each number which is not always numerical or scientific.

There are numerous professionals in these forums.

I left them recently like many others have in the last 5 months and even though our money was technically an investment and a limited partner contribution, they refused to give anyone their money back even after stating numerous times they would give people their money back if they choose to leave. 

Once I did a portfolio refi, I got all those loans off my credit report and my credit shot up into the 800s very quickly.