It all depends on your specific circumstances and I think getting other's opinions is helpful but what works for YOU?

Depending on your exact situation, you could likely get something closer to 7% and make these numbers work a little better.  

FHA will depending on how everything is setup.

Depending on where the property is and the lender involved, and what he has told the lender, and so on and so on, you handle things accordingly.

Depending on the size of your portfolio and what you're doing in real estate, it may or may not be worth it setting up all these entities.I don't run any other businesses. 

It's a range and depends on the property type, location, end condition and rental strategy. 

@Alicia Howard Since your 5th wheel RV is used exclusively as a short-term rental property and does not move, its depreciation depends on its classification.

(Usually you cannot use prior employer history until you have been at your new job for 6 to 12 months, depending on the underwriter to show that you are maintaining the same level of bonus/overtime/commission income that you had at your prior employer).

Yes, depends on if he already has a loan and the rate on that. 

@Michael Whitman , it would totally depend on the company, but you make a great point.