I'm talking about mercilessly reinvesting everything and increase your velocity of money 10x to become unstoppable.

@Michael Behrens I'm fairly new on the REI scene, but I now have two properties under contract in Indiana with my own money and I'm aggressively expanding my network of potential private money lenders amongst my family and friends so that I can maintain a high velocity of acquiring properties.

Velocity of money.

It might not last the number of years claimed.Leaks come in various sizes and velocities.

Velocity of money is important, especially in the flipping business. 

If there is room for the extra holding costs and you have the velocity to keep the timeline short, it could be an option.

.- My takeaway was that the best velocity I can hope for is 1 house per 6 months.

The value of money is it's "velocity" and if it doesn't move quickly and smoothly, it ain't a currency.

It seems to me that with 151 units, with many of them cash flowing, you would have a powerful "velocity" of money with which to pay off at least a couple of loans, lower LTV's, and really entrench your position.

The other hugh factor is velocity, you can double the money supply but if it all goes into savings,  and is not spent it is essentially the same as removing the dollars from the system.