Darien,
Check out this link for what to look for in a CFI: https://airlinepilot.life/t/questions-for-any-prospective-flight-school/117/14
I find the work environment to be great. Of course like any job it has its ups and downs, but overall the job is really good. I can’t imagine doing anything else. Take a look at the “Flying the Line” section as there is a lot of good information about the job that you will likely find helpful.
Chris