The school district we are in right now is okay, the school district about 10 minutes away is significantly better.

Trying to identify if better to list as Turnkey STR or empty it out (i have no use for the furniture and appliances). 

It has profoundly impacted our life for the better, allowed us to meet amazing people that like us are very passionate about Real estate and we are very grateful for it.

And the better companies 3 years.

Feel free to review and adjust the numbers to gain a better understanding of expected performance. 

Normally, for comparables, you want to look up recently sold properties within a half mile to a mile (the closer the better), in similar condition, square footage, amendities as the end product, and the same or similar bedroom/bathroom count.

Done and done.If you realize that those above topics are pretty much everything about Self Storage AND you learn those three (precursory will work, in-depth is better), you've got all your bases covered.  

You're better off picking the one you like early and negotiating quick and hard.

Should I keep doing this or is there something better for mid-term stays?

There are definitely some areas that are better than others.