[akiselev]

LCD temperature specs are for ATP, where heat transfer functions very differently from vacuum. With radiation being the only way energy enters or leaves the satellite's thermal system, all the satellite has to do is heat the LCD faster than it is radiating heat. This is the case for most instrumentation on satellites and thermal is one of the most important and well understood systems.

Colloid thrusters (or other ionic propulsion), or even a chemical hybergolic propellant (hydrazine + oxygen for example) would work perfectly for propulsion. This is a solved problem, so much so that there are off the shelf modules for cubesat propulsion.