Agree with the simplicity, and much of what you got here is good advice.
Despite being generally anti-fluoro, steelhead is one time when I do use fluoro tippets. I think unlike regular trout, steelhead do get line shy. Also, in the lengthy fights with a toothy fish, where you can't horse them away from cover, I think the better abrasion resistance of fluoro is a big plus.
However, I'll add one thing. I do like to have some mono built into the leader for steelhead fishing. At least the butt section, maybe all but the tippet. There is one main reason. Stretch. Fluoro does not stretch at all, which leads to more break-offs, straightened hooks, and the like. Having some stretch built in helps protect your tippet and soften sudden surges and runs. It gives you some leeway to make mistakes too, especially at the beginning (when your trying to get it on the reel) and end (landing) of the fight. It's pretty much the same idea as having a soft rod tip.
So regular fishing - I'm mono all the way.
Steelhead - a mono leader with a fluoro tippet.