Ryan
I like the idea of preserving the camera. The further one gets into this concept the more one just wants to put it all back on a manufacturer. The cooled CMOS cameras are more affordable. Here are some questions...
Can you achieve a stable + repeatable temp? If not then prepare to repeat all the calibration frames every session. Honis cooler boxes didnt use themostats did they? Cycling Peltiers is not recommended is it?
Can your system avoid condensation? My Honis - style cooler boxes always had water in them.
Will you use a closed tube system with the cooled camera? Frost quickly developed on my light pollution filter in my Newtonian telescope and using a dew heater strip was required but not always successful.
Does the cooler system require more power cells?
Does it add difficulties with scope balance and set up time? Do we have time?
Cheers
GlennB