Barring the Rules Review, there's only been the single edition of Mordheim...unless I've missed something major in the last 6 months or so...?
To the Beastmen, okay I've only had experience with the heinously broken 1st version publishing of the beastmen, where there wasn't a centigor but everyone at least of the gor variety had 2 wounds to start...getting max wounds/toughness very early on made them so, so broken we retired that warband very early due to how unfun it was for everyone else (I was havinga blast taking 15 pistol shots into one hero a turn and coming out alive :p). Oh, and the Chaos Hounds were 60gc and kicked ass not warhounds in the guise of chaos hounds So, advice...
Because you want numbers try this:
Heroes:
Chieftan, dagger, hammer 68
Shaman, dagger, hammer 48
Bestigor, dagger, dagger 47
Bestigor, dagger, dagger 47
Centigor, dagger, dagger 82
Henchmen:
Gor, dagger, dagger 37
Gor, dagger, dagger 37
Gor, dagger, dagger 37
Gor, dagger, dagger 37
4 x Warhounds of Chaos 60
13 models, 500gc start.
Weight of attacks and mobility is your key here. The 4 Gors in separate Henchmen groups to ensure TLGT comes up faster. After your first game get hammers as the secondary weapon to replace the daggers, and get lucky rabbits feet (for exploration) then lucky charms for each of your heroes. Helmets would be a good idea as well. Your expansion in terms of warriors is another Gor (in separate henchman group unless you have 6 heroes in which point add him to whichever group has more attacks base) and another warhound to take you to 15. You should be able to do that within the first 3-4 games easily.
Hope this helps,
Luke.