If there are any helpful answers, I believe such responses would also be valuable to others in my position.Thank You! 

Most property management companies are licensed realtors with extensive experience working with investors and providing valuable insights into their local market. 

Did the proceeds from the sale count as short term or long term capital gains?

They also didn't get hit with capital gains on the entire purchase price, which enables them to keep more of their money. 

Additionally, your brother would inherit your cost basis in the property, which could result in significant capital gains tax if he sells the property later.

I also purchased the "training/coaching" and received very little support and what I did receive was not very valuable.

Everytime you sell you will be taking part of the gain tax free. 

IF my numbers are truely "too low" I just looking gain confidence in how I am analyzing properties and estimating repairs.  1710 10TH AVE N, 37208: https://docs.google.com/spreadsheets/d/1B0CoSbGxQFbRBVzXBERw...6121 Southampton Dr 38119: https://docs.google.com/spreadsheets/d/1a3WBEcgv2SMggu5P2HrK...2014 Salem Mason Dr, 27208: https://docs.google.com/spreadsheets/d/1Jzr5TN9PYhuiFuD2THLb...Spoke with a seller yesterday, before I go with these numbers I thought it best to ask for some guidance. 

Thus, my main goal joining this forum is to try to gain confidence in the decision to get into real estate investment and better understand the risks that I may not be considering due to my lack of experience in the field.

You and your husband are definitely in the right place to get valuable information.