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To get the hound on a 1 you'll need 68 intimidate if I recall correctly. Don't know the others, but it's around 55-ish. The problem will be in mod 9, by then a pure will be behind with ~10 intimidate or something just from skill points, another 1 from missing out on fighter intimidate I.
I don't think it'll work in mod 9 as pure if you're aiming for intimidate.
Oh there's no doubt that splashing fighter or rogue would be much easier. I was just kicking numbers around to see if it was possible to keep that 10 dr /epic. Still a 60ish intimidate seems doable by level 20 even on a low charisma pure monk. A lot of feats, enhancements, and gear, but doable.