The Energy Summit sounds like the high risk, high reward option. I'm willing to roll the dice on it and see what happens, if he can make a good impression there it would significantly smooth out his ascenscion with the rest of the GDI and maybe even earn him a positive trait or two. If he fucks up and gets canceled, then..... oh well, we'll pick a new one, c'est la guerre. I think it's worth taking a shot and seeing what happens.
I know the thread is super risk averse though, out of the "boring" fallback choices that are less likely to explode I think the GDIOnline introduction is best, score some popularity points without being seen to overly favor any political party. Showing up at the Developmentalist PAC is an open political statement tying us to them, the Enterprise and Chicago aren't quite as explicitly political but they're still the "focus on military" and "focus on space" options which would align us with the Militarists and Starbound parties indirectly. GDIOnline aligns us with... shitposters, which honestly I'll take over tying ourselves to any Parliamentary party. Starbound or the Militarists or the Developmentalists can always roll bad and suffer a surprise loss in an election, shitposters are forever.