-do the solar cells have to be on the ground, or could i attach them to frames as well and pull them along? (i have the hardware power...)
i don't quite understand what you want to do, but i wouldn't advise you to move the solars. the solar array changes in size after every step, which will lead to problems cause you're trying to move an infinitly big object. moving the factory which never changes in any way is better
-rather than switches, could i streamline a bit and use a pressure plate cockpit instead?
the system should be fully automatic and a pressure plate stops if nothing steps on it, could be a problem
i would also like to state that an autonomous is impossible (by design, so i've heard), so i'm looking into the logic of 'dumping' a reactor off the rig when it is empty.
i can't see if you're doubting system itself or the amount of energy you can produce with non-renewable generators before the solar array works. the former is definitly possible, you can simulate it via a simple DFA.
in your case i would start to prototype most logics and systems, so you can find problems and limits of what's possible before it's messing up your factory. start constructing on the real thing once RP2 gets ported to 1.3.2. the new nuclear reactors can support you with enough energy to construct the first solars in one cycle and we don't know what new features the next RP2 will bring us. maybe we'll get tubes and cables/wires INSIDE frames, which could revolutionize your whole project.
just my humble opinion