I want to take advantage of Vader's extra action, as well as the maneuverability of the Imps in general. I'm thinking:

Vader + Squad Leader

Turr Phennir + PTL

Nightbeast + Targeting Computer

Not sure how to fill it out, or what changes to potentially make? Thoughts?

With 24 points you could run a Doom Shuttle, or Saber Squadron + PTL as a wingman for Turr, or a Scimitar Squadron Pilot with Flechettes and Homing Missiles. Also, somewhat obviously, you could run 2x Academy Pilot. I can see any of those working, depending on your tactics and comfort level with various ships.

(The problem, though, is at 31 points Vader is a tough sell. I still like him with Squad Leader, just as you have him here, but for 2 more points you get a Bounty Hunter, which represents substantial increase in offensive power. So you have to have a clear idea of what you're going to do with Vader every round, or he'll never pay back your investment.)

If you want to Squad Leader him with Interceptors, run him with Kanos or Lorrir to fix their EPT issues. The question would just be why to work that hard to do that. Kanos is maybe worth it, but Lorrir... not as much.