Against marcus I probably wouldn't feild the cerberus because macus is able to control enemy beasts using an ability called alpha and he has abilities that specificly target beasts (same problem with hoarcats). Against any other master I'd take it though I always liked the idea of a winter sabertooth. As for your list I was using the very same list and it seems to work fine as at 30 SS it gives you a cache of 5 which is plenty. The acolite was a lot of fun to use I liked using his harpoon gun to drag things towards him or into range of rasputina's spells, the wendigo is a lot of fun to I used it qite aggresively and charged things that I thought it would be able to kill and when you cast devour on your opponents totem the look on the players face is priceless. the golem is a good deterent for anyone wanting to get to close to rasputina he's quite slow and can't keep up with the gamins. The gamins work well for taking objectives, finnishing schemes and with their trigger sub-zero and armor 1 they are good for holding things up in combat and then shattering.
hope this helps.
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