I check the SEC, FINRA, ratings websites for inside information on the principals in the company.

It's awesome to meet a fellow Texan and real estate enthusiast. 

Hi there, curious if anyone local to OKC or an investor in the area knows of a website or has docs in regards to various zones/area codes and what their ratings/scores are in and around the OKC area. i.e. zip code: 01456 Grade: B-.

I have a friend that I just taught amortization to as he is trying to quickly pay off his mother's FHA loan to remove a co-signer, then cash out refi (yes, I explained interest rates right now).

A reduced rate would mean reduced service. 

If I'm in your shoes I would checkout any local RE meetups happening nearby, that would be a great spot to meet some other folks in your shoes and/or other lenders who might be able to give their perspective if it makes sense to pull out money from your home rn or not. 

Rents for a great rate and now cash flowing $700/ month total Lessons learned?

However, we are considering attacking the higher loan amounts and the loans with a higher interest rate?

Your interest rate is a bit low - is that the most recent rate?

New construction may sometimes have slightly higher insurance costs initially.Property Taxes: Research property tax rates in the area where you plan to build.