For the first question, I'm not entirely sure. The idea of being alone all the time is not something I like - I do like to be alone sometimes with my thoughts, but I think if I were alone all the time for the rest of my life with no human contact I'd go slowly insane. I hate the idea of being watched as well though, so it is a pickle. I guess I would choose to be monitored, provided I would be able to interact with the person monitoring me.
For the second question, light, of course. Darkness forever? No thanks. I love being pale, but not at the cost of being able to see things.