Is this a functional starter list?

In my view, yes, in fact I find the best use for the Alpha is to be the one wielding the big gun, he has the 3rd arm included in his cost and has an extra wound on an acolyte so will stay in the fight much longer, especially with a familiar.So, is the Alpha better fitted stayin back? I got him the Pistols and Sword because Ive seen people doing so, but actually I would even prefer leaving the CC to the Aberants.
All good points. Your champions are melee glass cannons so can easily fold if caught up front.Mean infiltration SpamI just hope your Leader and champ dont just die being so aggressive... Maybe you could consider Las Guns instead of some of those Autoguns, they are slightly better at pinning, especially at range.