I think identifying these markets that have a history of vacation rentals (so STR regulations are not worried about), near State or Regional Attractions (alot of national attractions may be priced out but not all), while also being affordable for the average STR investor.

If Indy has direct options and Knoxville is connecting, that would be another check in the Indy box, assuming friends would actually be helpful.But as others have stated, BRRRs are basically buying a flip and turning into a long-term rental.

This would be the agent representing both sides, this happens a lot (state/local boards and broker has to support this).

4: I'm pretty confident the house is vacant, according to my research the owners both live and work in the same town in a different part of the state.

Only one bank account needed, but you'd have to track income & expenses to do transfer and year-end accounting.As @Nathan Gesner mentioned, not really worth it.You two could also open a joint bank account for collecting rent and pay expenses, just be sure to track everything.Do NOT do what @Paul De Luca stated about transferring title!

This is pertaining to state of Florida.  

Any recommendations for a good area to consider in the Tri-State or eastern PA region?

I have the ring camera with solar panels and a ring hardwired floodlight camera.I have ring cameras at 3 different properties in 2 different states. 

On eventbrite you can see they hold numerous "free" one-day masterclass events across many states (mostly in FL and CA): https://www.eventbrite.com/o/multifamily-mindset-33157729673And I came across a review from an online blog that goes into more detail about MFM: https://ippei.com/multifamily-mindset/Since I think I would be way over my head with multifamily I would not attend their 3-day event at this time.

I heard about setting up a LLC out of a state that has lower taxes than using your home state which may potentially has higher taxes.