Allows you to keep a master key that works on every door while also having unique keys for each tenant.

This is such a niche thing that I doubt many of us here can put a value on it with 100% accuracy. 

This one also charges $20 to attend.Revealed: Our Simple, Proven Formula For Raising Private Capital For All Of Your Real Estate Deals – with Special Guest Kendall Stock of Sage InvestingSage Investing will be bringing a unique approach to the San Diego Investment Club.

Do not try anything unique or different until you have gotten some experience.  

I really don't know what anyone else would say, but its unique situation and that is absolutely what i would do here and that is what you asked.I hope it helpsI did some research and each state is different.

A home inspector is uniquely  trained in so many components of a home that a Section 8 inspector has NO CLUE about.

Brand new to BP and still formulating my business model but working on a strategy to specifically fill this niche and become an agent that can invest my agency income as a partner in investments. 

Some places do, but what's best for you depends on your niche.

They are typically professionals that you do not know that leads you to a long sales pitch.There are a few things you might do after you make a niche selection but before you start making offers.  

Also feel free to ask questions, publicly or via PM, of pros you see that seems to have a lot of experience in niches that interest you - most people here are more than happy to help out new investors.