I run Thrawn but will switch to Akbar when he is geared. Finish 1-20 December 2016 shard depending if I am lazy.
My team:
Biggs g11, Ghost g9.6, Vader g12 ->Phantom* g9.3, FOTP*g11, Cassian g8, TFP g11.
If I were you I would swap Ghost and Phantom in your lineup, but need to max Phantom's reinforce. Ghost helps prevent Target Locks and Phantom's reinforce is arguably the best.
To change to full rebels:
I am 99% sure that a maxxed Bistan is even faster than TFP and can replace Vader. He does not hit as hard though. Wedge may be able to replace TFP and Resistance Pilot as the 4th.
The issue with rebels is that 4 of their ships require 10 pilots -most of which have questionable usefulness in other parts of the end-game. That is just a crushing investment.