He told me it was the easiest landlord/tenant relationship ever.

Restoration contractors deal with insurance losses daily, may already have a relationship with your adjuster, and will submit a proposal for the cost they need to have the work completed to "pre-loss condition" and your standards.

Would it be considered acceptable or ridiculous to ask an accredited and very active RE investor who is interested in a deal you are looking at (whom you hope to develop a positive relationship with and or/ partner or invest with you) to sign a non-circumvention agreement, prior to them seeing the deal AND prior to having the deal in question under contract? 

@Aaron Tiffany, there's a lot in here, so let's take them one at a time.Multiple loans: the key is to establish a strong relationship with a local bank/credit union.

I would have to establish a relationship with them, prior?

The advertising industry, or really any industry that sells anything is all about relationships.

You might need to start off with hiring a GC for a few projects and build a good business relationship so you know he does good work and he knows you pay and are serious. 

You can say get a PM, but that is another relationship that assuming you've never had before and trusting that person to fill 16 units vs. 1. 

Some fear going it alone, others are in a relationship and want/need their partner’s support, some are afraid of change, and others are too comfortable with their current conditions to be motivated to change.

On bigger pockets do people ever form long term relationships of investment, or partnerships whereby someone who has money they want to invest would seek someone on the forums who has luxury short term rental experience ownership and management 3+ yrs, looking to expand over 10 years of management and financial experience in a top 10 Forbes destination location here in the United States...