Good points for sure on all the variables, Eric. Eads has an elevation of 344 feet, less than half that of Dickson which is 804 feet. As to the other variables, plankton is controllable and thus wouldn't factor as a limiter short of a high outflow such that fertilization can't be done effectively; temperature in that area is normally a little warmer than where I live as per one would expect from the latitude and elevation (I have an aunt who lives an hour from there in Jackson so I know the area).
To tell the truth, I based my recommendation not just on firsthand knowledge of multiple lakes north of Layne that have successfully had TS stocked, but the fact that SEPM stocks them at this latitude. They strike me as one of the best pond management companies around and people that know their stuff, so I felt confident that if they had stocked them at this latitude, and I knew of BOWs at this latitude that had successfully had them stocked, that it was a safe recommendation.
The article you mention sounds like a must-read - sounds fascinating.