I'm not sure which you're doing, and while I agree BRRRR is overhyped on this website I'm not sure I agree you have put forth a better solution, maybe you can explain it better. 

The Seller's proposed solution (add a humidifier) does not solve the issue.

Not knowing your situation, I can’t recommend the perfect solution. 

Leaks had been fixed with duct tape leading to entire beams needing replaced, electrical solutions were sketchy, and the kitchens and baths needed a complete gut job. 

Sometimes the solution is to do 10% or 15% down (to count the other 5% or 10% towards checking the "reserves" checkbox), which does indeed exist for jumbo (at least in California).

What is the best solution to this matter in your opinion? 

Is that a good, low cost solution?

2) Why would it make a difference in your life to get a good answer to this problem or find a solution for your need?

@Hubert Kim pooling the properties together and shopping for a better PM sounds like a much better solution.

Once the project is complete we expect to achieve $5750 in gross monthly rent + recapture 100% of our acquisition capital + 30% of our renovation capital.We are presently in pursuit of a good financing solution for this project, this seems like a great opportunity to apply commercial financing as we have six units on our hands (3 separate properties).