I can't offer much for the others, but you really don't need to worry about getting Booth's voice wrong. I love the show, and I love reading Booth's posts because I can hear his voice so well. Especially when he's tagging back and forth with Bones, but the rest of the time, too, he makes me smile when I stalk him because he's just like he always was, just...learning to cope with the whole 'magical castle' thing.