The hat MUST be blaze orange. It has to be visible 360 degrees. You can meet this with a blaze orange hat band. I had a orange cap, but it was not bright enough. It has to be blaze orange.
Not enough can be said about two pairs of boots. My boots would not dry out overnight inside. When you have dampness inside your boots, you can have cold feet.
It is a different cold in Colorado. It does not penetrate to the bone like the damp cold back east. In over ten years, I never hunted in insulated bibs or insulated coveralls there.
Good Luck!