It looked good, and someone I trust checked it out for me - I'm out of state, but being there would not have changed anything, as I wouldn't have been able to identify duct work that's not to code, etc. by sight.

Other than this wonderful sight, are there any resources you'd recommend?

Granted that number would go down every month as principle paid off.

Garbage in - garbage out as my principle always says.

I would suggest that you sit down and narrow your sights on exactly what you want to do (SFR/Multi) and go after that specific niche and if you are going go that route finding a partner in that niche or go it alone.

The metaphor might be a tad weak, but I'm sure you see the general principle.

The one thing I cant find much due diligence principles at all is in the Industrial space. 

Partner with the best local experts you can find, and empower them to apply their principles over time.Avoid the urge to micromanage during slow periods.Which leads into the next point...2.

Great question Nicole as you've stimulates so many great and varied responses which are tough to add to.I'll focus on the "WWYD" component of your question and the general principles I would follow versus giving you any more advice on what you should do.Rule #1: Don't lose the money.

The first has already had payments made so the principle will go up faster each month