1. Basically. You could install Fusion Lamps to get rid of both of those conditions at the cost of 10 Volatiles demand and +4 Pather interest, but in terms of pure profitability - short or long term - that is definitely not worth it.
2. Support. A Vigilance that's by itself is a sitting duck, you want them to follow other ships and deliver the gifts of a medium missile slot to those who need to die horribly. Medium energy can be either support or PD, depending on how you build it.