So it's more-so there a construction/maintenance company, who uses a PM offering as a lead gen and capture device to drive sales. 

You can learn to do this independently or get a rockstar REALTOR to lead the way.

That lead to 20 calls a day, then 50, then over a 100 a day.

Brokers either get leads through a network of brokers in other disciplines or organic contacts.

I wanted to build up his team, I wanted to help bring him work, I wanted to help in sales and lead generating and buy into his companies LLC.. but even that was fraudulently represented as  In the beginning he had represented himself as someone who had a team in house around 60 people, with vehicles, trailers, tools, lawnmowers, weed wackers, nail guns.. the works.

Wouldn't buy leads from them. 

This could be laborious as a one at a time deal.Not sure if this would work but you might be able to pay someone from Fivr to write a script that would do it automatically for you and generate a list based off of the multifamily addresses that you already have.   

My rule of thumb is the more details you include about the property the more quality leads that you obtain.

I hope you or someone is at least keeping an eye on your properties for break ins, squatters, roof leaks, temperature control, frozen pipes (if in cold climate), if you have a basement and sump pump goes out leading to water damage etc.I just talked to two investors in California that have let their properties sit vacant (no mortgages so paying property taxes and insurance).

With $4+ million in equity, you could conservatively leverage your replacement property(ies) and generate strong passive cash flow from high quality NNN assets.