I think you need cash flow to sustain your property. 

If my lifestyle changes and I need more properties to sustain it then will buy more, but I have been enjoying the downtime over the last two years

(If 300 other people implement the same strategy in your market at the same time and are going after the same target are there enough to opportunities to sustain your business?)

My job involves sustainable/green building.

By acquiring distressed business and property, leasing to ourselves, implementing improvements, and strategically refinancing, we are poised for sustained success.

By educating yourself, assembling a strong team, and executing each phase with precision, you can leverage this strategy to maximize your returns and create a sustainable, thriving portfolio.

Such supply volumes outrun sustainable demand trends.

Be prepared to have a structure that you think would work for your business model and see if any of it resonates with that person. 

If the flipping model is dead in your market, then a large number of wholesalers could not sustain themselves unless your market has a tremendous amount of investors looking for rental property right now.

Correct.If you're doing "substantially all" the work yourself - you don't need 100 hours, in any year.Your CPA said 100 hrs next yr because it is not sustainable to do everything yourself.