However, if i would take 100k home equity on a rental A (ex. 100k) and use 50k each (same as above) for 2 rentals (B & C).

I'd recommend a HELOC for your situation, especially since there is already good equity in the project.

Chances are this is NO deal property as the X will want their fair share and a fair market appraisal will need to be done and the equity split equally.   

And it also concentrates the equity in your remaining property. 

@Jaedon StoutBRRRR Strategy - This works well when buying properties below market value and rehabbing them to increase equity.

I'd personally never take capital that I am paid to manage without committing my full-time effort to the situation and putting a majority (I reserve the right in the future to make this 1/3rd of my position) of my wealth into the situation. 

While I’m open to both turn-key and fixer-upper properties, my preference leans slightly toward value-add opportunities where I can improve the property and increase equity or cash flow.That said, I’m also happy to consider turn-key options that provide immediate cash flow if they fit within my investment strategy.

.), maybe showing how much equity could be pulled out of which property when, whether the portfolio would still cash flow, etc.

On the positive side, the price points and rent-to-price ratios in Detroit make it a compelling option compared to California.

If you rented this home and it was putting $3K positive cashflow yearly in your pocket, the returns would be 3/4=7%.