Shaak has MOTF 2, so without Garm, she could techinically move 10 squares, and still make 1 attack. Divide that by 2.
Not sure why you really need a Cor Sec Officer against Stealth, as Garm would be the only piece that would be able to shoot at the Stealth stuff.
Rauntaun against Bane is a definite, as you'll need the Recon to help keep Shaak alive. Might also consider a Rebel Honor Guard as Reinforcements from Garm against Bane, so it can soak up one of Bane's 50 damage hits.
The ability to win init, Double Attack, and then move away is pretty nifty.