It's really tough to give you suggestions without seeing the rest of the sales letter. I don't know the product... the price point... the offer being made... what hot buttons you're trying to hit... etc, etc, etc.
In terms of your headlines. I skimmed them quick and felt like you did some tweaks from headlines that are typically in a swipe file. They seem flat... like they lack snap or spark IMHO.
Here's one off the top of my head, just using some of your headlines are subject matter:
"Here's How To Achieve Your Goals -- Right Now -- and Start Enjoying the Lifestyle You've Always Dreamed About..."
Can you see the difference in energy and enthusiasm?
Hope that helps,
Mike