In truth and fact it is a process that takes time measured in years to become proficient at operating alone. 

Also to be proficient in analyzing deals to build my portfolio.

The variables (in my order, most important to least) are your experience, stability and efficiency of your systems, proficiency with "good" property management software, portfolio makeup, and how well you vet your clients.

Question #4 is the one most in my wheel house, so I will start there.The first step on this or any investment property mortgage question is to make sure that you are using a lender with proficiency in investment property finance and the ability to originate mortgages without overlays.You mentioned "broker", and although your mortgage person may be best in class, you truly need an originator that can go straight off Fannie/Freddie guidelines. 

You seem to be more concerned about funding before you are really proficient in negotiating a great discounted property.Money for real estate will come once you create the great deal.

Either become proficient at determining these yourself or team up with a trustworthy agent and/or G.C. experienced in determining true market values and rehab estimates.

If a successful real estate investor has the knowledge, proficiency, and professionalism I desire–why would I not seek them out?

Should be proficient in creating reports, excel, etc.Perfect for an eager, go-getter who wants to learn the business and gain experience.Send a message if you are interested in this role.

Now is the time to get incredibly proficient with your financing knowledge.

I would start with 1, get very proficient, and reevaluate often.