Have you compared that to any other available financing methods? 

means the BRRR method wont work anymore?

With this method, you can use the "projected rental income" without proof of occupancy/renters to help you qualify (income-wise) as long as the rents meet the Self-Sufficiency Rule.

I will try that method tomorrow and see how far I can get.

I am not saying that this is the best way to go as i am not following this method myself, but it is the way I imagine it would go if I were interested in doing so and disciplined enough not to spend the income from the rentals.  

Of course use this method if you can't seem to find the "perfect tenant" to rent the property.

I have a few questions regarding the best time and method to communicate with these potential sellers.

We are pretty confident about this considering we have methods to scrape the internet and find live data points (instead of Zillow and Trulia, that requires people to input aged data). 

People who can think creatively and find solutions and methods different to what others are using are the ones who find great success in my opinion

For months I spent time researching different investment methods, and various ways people tend to get started, but recently I made a decision to follow through on my chosen niche for getting started in making money through real estate and I fully committed to pursuing that one avenue.