Finally done the TEC tests. Pretty much TES2-19003 run at 12V, ~2.1A get a delta of 50.2ºC (-20ºC and lower) regulated. So running it at -15ºC (within 10 mins time) should be fine.
Tested TEC with IRF7832...no problems as a switch device. Had to add resistors to gate to lower capacitance but this was not an issue running TEC Vgs @3.0V Pd across TEC was .273V, well within the devices limits.
I did hear a "crack" when re-mounting the TEC...although inspection showed no cracks but I did notice it was a little slower in cooling than my original runs...by ~2ºC. Ordered another TEC....
Funny thing increasing Vgs did not improve conduction or cooling! Rds on is good for low Vgs on this device.
So final hurdle, need to add FET gate resistors to schematic and its ready to roll!....finally
Yeah baby!