In this case you will need to vet the companies that you intend to work with throughout this process extremely dilgently.

It's no secret that real estate investing can be extremely lucrative and rewarding.

Extremely helpful.

This and having a copy of the leases before you agreed to purchase are extremely important parts of buying multi-family to avoid confusion like this. 

Even the best CPA who has some extremely valuable insight won't help if you have no way to carry it out locally.

He was extremely familiar with househacking and my plan etc.

With cap-ex extremely low and other expenses low as well I can comfortably take in 1000/m cash and leave the other 500/m for expenses and savings.

Institutional investors sometimes have an extremely low cost of capital and expertise in due diligence that allows them to do well on much lower returns.

Normally dealing with a problem like this is a big challenge, but dealing with it over Christmas eve & Christmas day with extreme freezing temps when no one wants to work adds significantly to the complexity. 

Extreme Example: 1,000sf house on 5ksf lot in original condition, on a main highway, does not have the same $/sf as a brand new, highly upgraded 1,000sf house, on 1 acre of beachfront. * You can ask to extend the due diligence period, based on false information provided/advertised and newly discovered facts.