What to add to a Vehicular Manslaughter list?

By CheapCreep, in Imperial Assault Skirmish

So, I just painted my RTH Scum and Imperial minis and after looking at this

tumblr_o0pd8w1xS11r12qrqo1_1280.jpg

I knew I had to make a list using my Hoth ATST and Tank! That leaves me at a heavy 31 points if I add Sorin, which would be fun. But what would you spend the extra 9 points on? I'm really stuck on that (I know the list isn't that competitive, but It looks fun.)

Either 3 Probe Droids for some nice Hoth theme-ness.

Or Elite Stormtroopers because they're a fabulous unit, especially with the healing/recovery capabilities of the Snowtroopers.

AT-ST ( 14) + Tank (10) + Sorin(8) = 32

Maybe an elite probe and an reg droid? Or reg stormies and an officer to have someone to run for terminals and objectives.

I think the two probes makes my Hoth mind happy, but the Officers and Troopers are by far the smarter choice.