I am really partial to fleece jackets - full zip. As for the pants, I'm on the fence. I've owned bibs/pants and I have no real preference. Bibs are better for the longer sits in the cold, just by virtue of more body coverage, so I guess it would depend on how "heavy" the material/insulation is going to be. Are they "cool weather" pants, or "COLD weather pants?"

There was a company that had a "textured" fleece jacket out - and it really looked great. The fabric had an impression cut/sewn in that made the jacket "look" like actual treebark. A 3-d effect.

That would probably really go great with your pattern. Just thinking out loud.