Currently it has this large single-family home that I am running as a STR (https://www.airbnb.com/rooms/1124648152156916536).

My situation: I have an FHA loan at about 5.5% and my understanding is that it usually makes sense to refi once rates are about .5% lower than your existing rate, which means I may need another .75 to 1% decrease in the rate.

It can be a lot of time and work if doing it on your own.

Is there a way to purchase a property as a business move with your LLC instead of doing it the conventional way?

Does this seem reasonable ideally I could insure it for value vs rebuild cost?

It looks like no matter what, my actual name will need to be filed on annual report with the NC LLC (even using a registered agent). 

How do you balance affordability with growth potential?

And no, doing this by yourself on a weekend or two is not gonna happen.

For the pre-foreclosure properties, the realtor said it took a lot of time to deal with the owner with a big uncertainties so they can't help with those properties either.Please give me some advise on how to use foreclosure.com to find deals correctly.

The BRRRR strategy is solid— I've seen it work wonders (recently Refi one of my properties).