Will such cash out more expensive than obtaining the refinance cash out individually or getting the mortgage in the first place?

So far, I've left VMs/ emails with my property managers' emergency number, individuals from the property manager, and the insurance sales representative for my policy. 

Looking for agents to assist with the search and purchase, as well as lenders who specialize in underwriting self-employed individuals.

Given the number of tenants, this property may need to be insured on a commercial policy form similar to an apartment building.The liability is highly important if the property is in your name individually.

Block Real Estate and Marcus and Millichap have some good resources on individual markets, particularly for commercial real estate.

I've read other people's stories on here and most the time I've seen the strategy of "house hack" and it is a younger individual, maybe married, but no kids.

I was wondering what would be best, an individual loan or a business loan and what are the advantages vs disadvantages of each?

Yes there are plenty of house buyers that are not a company and that are individuals that just flip. 

I met through an agent, an investor that his pdf presents him as a huge player. he has deals for over 2b all over the world. yet his online presence is close to nothing. both as a person and a company. is this real?

You could try something like Bungalow if they cover that area, if not perhaps an agent that only manages a handful of properties instead of a larger company that already has their systems set up for individual units.