Lending and borrowing is a relationship-based business. 

It can be challenging to put that wall up between the business aspects of the relationship and the personal. 

E.g. if your goal is to own 1,000 doors then you may want to consider multifamily, if you goal is to be entirely passive then you might consider being a LP in a syndicate, if your goal is to self manage then you will likely buy close to home, etc.Focus on one strategy, go deep, build relationships and dominate that space.

Find a lender who has competitive rates, great response time minimal junk fees and who you can establish a good working relationship with.

The relationship is key, and you may want to talk with your current lender in the future about some easier terms.  

Hi,I am interested in developing a relationship with a community bank in Ohio; specifically Cincinnati area at this time to refinance some of my rental properties.

I have read a lot about the importance of building a relationship with a local bank.

All investors are sophisticated with at 50k minimum investment, and since I have personal relationships with all of them, and I won't be advertising this publicly, they won't need to be accredited (that is my understanding). 

A good real estate attorney will maintain relationships with trustworthy title companies, escrow agents, brokers, etc. so your local attorney's office is always a good place to start looking for ways to stay compliant and save money on your wholesale transactions.

Networking - the more relationships you have, the more deals you see and the better chance a cherry falls in your lap3.