I was able to rent the garage to a seasoned electrician running his business through there only coming in and out to stock his truck once per day.I hope to be able to convert the second floor into an ADU as soon as Feb 2nd rolls around.

You might have a tenant upstairs and a local business renting the storefront below—a winning combination​.2.

Fast forward a few years we are we financially free via house hacking and owning small businesses (leveraging our house hacks as collateral). 

I personally think they are a good company (that's why I hired them) but they may be too 'busy' for small fish like us.

I do business with people I have met before, not the sudden opportunist who wants a deal.  

Which could be an open space Medical Equipment rental business, down to a Dentist's office with multiple room utility hookups.You're going have to vet this to a lower level of discussion anyways. 

Also, would this loan help build my personal credit, or would it only report to business credit bureaus under my LLC?

We have helped several businesses open up using a Tiny Home to fit their business needs along with the City of St Louis with their homeless project.

Correct me if im wrong.I was considering using anderson business advisors to set things up for me, meaning LLCs etc to play smoke and mirrors to a tune of $15k and thought that was insane to pay. 

Quote from @John Lasher: I've heard from so many investors that they have put a pause on their flipping business.