Keep your options open, adjusting plans based on appraisal outcomes, and remain agile in your approach.

Would it be better for me just to keep my money in the index fund?

You'd most likely have to look for a commercial unit, which would be more likely to have the card reading accessories you're talking about + they can keep up with the constant use, which residential units aren't designed for.

It's a good idea but it's like anything else in a lease - you have to be prepared to evict if they don't carry/keep it.

Keep moving forward. 

- Am I able to do a mortgage assumption from personal to the LLC to avoid the balance being called and effectively keep the interest rate?

Too many bought at the height of the market and didn't know what they are doing, so they are ones that would be open to creative options that could keep them above water until the market comes back around. 

I know someone mentioned that because it had been getting colder lately to keep the heat on but that can be costly if it’s vacant.

Keep in mind that right now because of the weather in OH, it might not be easy to get contractors to come out specially if you are planing to do anything to the outside of the property.

Keep track of the NOL carryforward and apply it against future income as applicable.