Once you have a shortlist, sign up for an account with each one and test them extensively to see how they function.

Because of his knowledge of the market and his team brought him the deal.  

(Dan on BiggerPockets:  https://www.biggerpockets.com/users/dang297#0)Hands down, one of the best, hard working, knowledgeable real estate brokers I've ever met. 

I do know that there are other sources to pick up knowledge.

In our town, the need for housing is well known, I was able to find some data but I think the general knowledge of it might be enough.Glad to hear about the success of your re-zoning on the triplex.

With 4 years in container conversions, we're transforming shipping containers into modern, efficient tiny homes and small homes.Currently working on a small, 10 home, senior housing development.Expertise: Container home design, sustainable building, alternative housing.Looking to: Connect with investors interested in container homes, share knowledge about factory construction, and learn from the BP community.Feel free to reach out if you're interested in container homes or factory building practices!"

I was hopping to find a very knowledgeable attorney who can tell me exactly exactly what to do or not and be on the safe side of the law.

Your question in (1), my simplest answer is this is why you're not ready to be a Managing Broker, your lack of knowledge, insight and comprehension in this regard. 

If you have significant resources you can start on your own, if not partnering with someone who brings some local knowledge can accelerate and stabilize your journey. 

We always leave those extensions and dates up to a client's CPA.