As others have said a partial exchange is possible, and common.

Everything you said is common knowledge.

The most common answer, especially in recent times, is highly levered, floating rate debt.This is not the only answer, by any means. 

If you research recent sales you can always provide the appraiser a list of those sales.One of the best ways to insure a higher value is to update the property using materials and fixtures that are popular and common in the area.

Yes first-time buyer DSCR is actually fairly common, especially here in Southern MI. 

@Nate McCarthyProfit Splits and Contributions:Dividing profits proportionally to investment (2:1:1) is common, but you could also account for sweat equity if one party is doing more work.

The only exception I use is when the property is a high-end unit.Informative title makes your property look like a cheap business but it is still way better than common titles like cute, adorable, cozy.If you are charging over 1k per night, I think it is better to give more high-end title like Stay with 30,000 trees, tingle your inner artist with lake front retreatJust my opinion :)

The common thought is to not rent to friends or family.

They are far more common now and harder to find models without but:1) these add cost to the purchase price2) they don't bring a lot of value3) they can leak or detach and damage the propertyI own around 50 doors and I cap off the line at the wall or in the basement with a valve and a cap so the potential for leaks is 0.00001% :-) 

Let's see how it goes when the one year anniversary comes.But in general what you are seeing is very common.