So, 1 and 2 have no relationship between each other except being owned by the same company. 

Make sure to not solicit any investors, but focus on building a valuable relationship. 

A great mortgage broker will have good relationships with good lenders and will help you put your best foot forward to get the loan.

Most of what these big box companies tell you are half truths. 4) Focus on relationships over sales production and you'll actually build a career and not buy yourself a 9-5 expense monster. 5) Keep your overhead low.

Does placing the LLCs in a holding company establish a "parent company" relationship that would make it easier for legal action of a suing party?  

That's different than a lender-borrower relationship.

This is best way to build relationships and gain trust!

We had a great relationship with a bank that was able to make that happen even though most banks were averaging 60 days to close.

I guess my post should have been more broad to connect with anyone familiar with MHP investing that I can network and build relationships with (not just broker and attorney)!

My relationship with AppFolio was a hate/hate relationship all the way until I hired my part time book keeper and full time property manager.