I've got enough houses to generate $20k gross per month, I work 60+ per week and I live overseas without a property manager. 

If you don't know how to do this, then find someone who does and let them work the file.Right now, the only value you add is as quasi-lead generator.

I currently exercise a buy and hold strategy, but have decided to do a couple of flips in between rentals to generate extra working capital.  

Selling property generates cost, dwindling profits.Me personally I don't trust myself selling one of my properties and finding something just as good or better. 

The price of a house with this income probaby should be no more then $400,00 if it generates $4,000 a  month in rent (including a rent assigned to john) 

Our goal would be to have enough commercial real estate eventually that would be some what of a good passive income generating corporation.If you need more info, please don't hesitate to ask.

Our family has been in the planning, engineering, architecture and construction industry for well over four generations. 

And hopefully be running an RE company that's generating 250K+ a year within 10 years.

If that location does not appreciate at all there is not much left to help buffer performance on a single family.The numbers have to work obviously but there are many more fundamentals to take into consideration along side "seller generated proforma caps".Total returns should factor equity gains.

Now , I would suggest a buyers site separate, that would generate leads for deals.