It is doubtful the upcoming generation will have the financial capacity or desire to take on this inventory (for multiple reasons) which can cause large price drops in SFH "all other attributes being equal."

Just because you do well on flips doesn't mean you can do equally well in new construction.

Just because both work with pipes, doesn't mean both of them are equal in knowledge in that operating room. 

Things are slowing down in some markets like LA, LV, AZ, Dallas, Seattle, Denver, but the slow down hasn't equaled price drops per say.

If you both owned the house equally, you each would report the sale under "business income" on Schedule C, since you are in the business of flipping houses.

It helped by allowing me to focus on exactly on the massive action required to build a real estate investing machine and quadruple in size every few months.In every adversity can be found the seed of an equal or greater opportunity.

We started the company by pooling equal amounts of money together to buy our first flip in 2012.  

My idea was to acquire enough passive income to equal my current income at my job.

With all this mind, your equity (100% of the ARV - "all your costs") is arguably equally important to consider.  

If you read the Code, you can find tables that show all the math on what # of feet equals what # of units.