Turkey is fine. Animals are great to eat. I think some people would argue against chicken and turkey for their more pufa oriented fat content, but as far as conventionally fed meat goes, I think that's actually the way to go.
No idea about the sulphites; I don't think anyone can answer that with anything firm behind their answer. I would say just go for it.
As far as meat goes, I think that's also a personal thing. If you're a guy and looking to build muscle, it's a little different than if you're a guy trying to lose weight. If you want to see what mark recommends specifically, then it might pay to check what mark eats in an average day. I think he has one or two posts with that info.