check this company that handles a lot of overseas investor,  small company but I found good to deal with and have purchased property in Mexico with them.  

Another example of not to follow the herd but to check your backyard constantly. 

Check out zen business. 

It’s worse than someone telling you check your car’s blinker fluid. 

Check out Julio Gonzalez at Engineeredtaxservices.comThey know their stuff. 

I can send you a couple blogs that provide a comprehensive overview and I'd also recommend you check out Doorvest - they essentially handle the BRRRR strategy on your behalf.

Cost seg studies have many different price points, depending on the complexity of the property but I would budget a few thousand dollars for a property the size.Regarding material participation, you should check with your CPA or tax advisor but generally speaking yes that would be enough time.

To get a good rental income, be sure to check who you rent to very well, write a clear rental contract, take a security deposit, make a smooth way to get rent, keep the house in good shape, think about getting landlord insurance, keep talking to your renters, and follow local rules strictly.

Check out oxfordhouse.org. 

It should be, but I would double check with a CPA knowledgeable with STR.