The high end rental properties can be a different animal than your run of the mill $2,500 month rental both in terms of upkeep and demand.

Don't put a high list price based on what you want, needs to be based on solds

Highly reccomend joining local investor Facebook groups.

It should be pretty accurate - high level data sites are not always going to be perfect, but should always be directionally correct and AirDNA has a pretty strong track record. 

From a personal standpoint I target 70% LTV for any investment I have that way gives me ability to sell it if I need tooI'm Canadian so it a T4 up here and yes I'm I high earner who can handle vacancies if need be. 

I highly recommend requiring ID, selfie, and pics of CC front and back.  

High risk areas.  3.

These are things at the high level I want to be looking at for all my real estate purchases. 

I agree with the other posters...25% down seems a bit high.

I highly recommend going to meetups and talking to investors in person.