But we would like to narrow down to a specific area if possible.

I’m happy to go over specifics with you if you like. 

And we have a separate LLC per investment property, incase we get sued, they can only sue that specific property - rather than me personally or any of my other properties. * Should I change what kind of mortgage I have since it is technically no longer my primary residence?

Thank goodness hardly anyone does that because it would have knocked us out of the STR industry completely!

I was looking for anything specific or recommended.

And just so we're clear, I understand the depreciation recapture, I am just unsure on the "nonqualifying use" regulation since the home was first a primary residency to begin with.  

Not to get political, but it's very interesting to see what it's doing in specific areas. 

All in all rates for MF investments range between 7.000% - 8.000% in this specific scenario.

I truly can't give you specific answers that you're looking for.

What I often see being a mistake is people ordering a cost segregation study before speaking with their accountant to see if it would benefit them on their return.What a cost segregation study does is analyze a property further to identify assets that be classified with a shorter asset life than 27.5 or 39 years.The issue when getting an 'estimate' from a cost segregation study company is that they are not accountants(more specifically not your accountant).