Was thinking this could work

Playing around in the squads builder with Vader,fel and palmobile

Have two pts left, so was thinking adrenaline rush on Vader

Get that kturn behind opponent. Use AR, makes it white them boost/focus or target lock

That's legal correct?

Absolutely. The K-turn becomes white, therefore you do not receive a stress token from executing it, therefore (assuming you don't overlap, I suppose) you are free to perform whatever actions you wish.

I typically use a 35 point Vader: Title, ATC, Stealth, and Lone Wolf.

Makes him nigh-unkillable, particularly with a Gloomshuttle, and the loss of Boost isn't that irksome to me.

I personally would also take "Lightning relflexes" into consideration. Yes you get a stress afterwards, but a 2- or 3-turn-koiogran can be real gold