Justin,
The power braking is due to the factory computer's programming. The Edge fools the ECM, but it doesn't eliminate the torque management....which is why you can't power brake it. When the ECM see's the brakes applied, it limits the power output of the engine.
To get rid of that, you need something like a Smarty.
Now, the trans....that back and forth between 1 and 2 is usually a tell tale sign of a problem with the governor solenoid and pressure sensor.
Temps....max you want to see on the tranny is 220. Set the alert to 210.
Any more than level 3 on that Edge and your trans is gonna start hating life.