Fel + PTL + Stealth
BH + Recon
Who are you going to shoot first?
BH with double focus at range 1-2
Nightbeast with evade and focus at range 2
BS with evade/focus at range 2-3
Fel at range 3 (5 green dice) with Focus and Evade- if you have a shot on him at all.
Swap in a Rebel Captive on that BH and the choice becomes a bit tougher imho.
I've been thinking about that as well, but I think that the double focus is a more versatile option because the Rebel Captive only affects one enemy ship per turn while the double focus can help in lots of different ways.
Ultimately I think it depends more on your play style.