Snowball -     Where if I were to payoff a single home with this "extra" money it would increase my cashflow by 8500/yr (but I also lose bank principle pay of 2000/year) so the effective added cash flow is ~6500yr.By the time I add Principal paydown and "slight" appreciation the add homes method seems to be the clear choice.        *** I would love to hear your comments on a debate in favor of the snowball.**** At some point, future, I think I will want most all properties paid off so I can have great flow with minimal stress and maintenance numbers but kinda feel growth phase is still smartest as of now. 

I am intrigued by the BRRR method, as a first time investor with rehab skills.

Another Evaluation method I have been researching is the cost approach, which is also detailed in the article. 

b) If so, does anyone recommend the method of making 2 half payments per month?

I think we could all agree there are basically three answers:A) Stay the course - keep adding 10 bps for each year held based on stabilized market cap rateB) Take a little risk - use the current market stabilized cap as the exit cap tooC) Throw caution to the wind - use a cap rate that is less than the current market cap (*If you pick this answer what method are you using to predict a cap rate)Which answer would you pick and why?

Use the Enemy Method to see what everyone around you is doing (if you haven't already). 

I've adapted my strategy to buying in mostly B areas.

Are there any pitfalls to avoid when exploring non-traditional financing methods?

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

There was also an additional bonus – the more properties I purchased each month, the higher the percentage.I felt this was a very economical method of handling the research on judgments and liens.