How do I go about doing all this in a cost effective manner and still make profits?

Ultimately, through learning and copying their process, we were able to increase our available credit from about 250-280k to over a million in a few years and we were eventually able to transfer a large portion our personal debt that we were using for business purposes over to business debt that did not effect my personal credit score any more.

There are great books and financial independence blogs that can teach you how to do this.Take the time you're learning to live on less to learn about REI.

You should use either LLC’s (the old and expensive way) or a Series LLC (the new and more cost/time effective way).

I will incorporate these tips into my next analysis and for my consideration of macroeconomic effects in my area.

At the moment, the question we are wondering is how much do you need to know to effectively Rehab in the Brrrr strategy?

Make sure you help them understand that if they do not pay their bill you will be handing it off to collections and their credit will be severely effected. 

However, I also don't know if having so much credit relative to my income will have an effect on my ability to get approved for a loan to purchase a property or a refinance option.

My vacancy rate is effectively zero.   

Many of the best landlords bring the management in-house, because they can monitor their properties more effectively.