"Consistent with the model, we find that even when universities price-discriminate, a credit expansion will raise tuition paid by all students and not only by those at the federal loan caps because of pecuniary demand externalities.

-What other externalities might you be personally wary of in a market?

You should lookup "external locus of control". 

I'm not saying it's absolutely necessary, but start with your internal questions first before deciding on external thing such as market locations, property income, etc. 

I want to build long term wealth and income through brrr but feel like I need a mentor to help guide me, Feel like I have a lot of the skills and foundation to start, just need guidance and some external motivation to make the jump

I would find out through administrative personnel in your office or my own research if it's a matter of broker's policy or external rules.

What are some alternatives to scraping these sites with an external tool?

I'm just transferring money my personal account to my business account because I have them linked as external accounts.

My advice is that your rent doesn't look high enough.  1% rule but that is a guess since I don't know all the external variables that will go into that.  

Nowadays, with a basic external cable modem, I get over 28MB and watch a lot of videos online.