5 reasons you should help me write a headline and how 1 minute can change the rest of your life

Just kidding . . .

I find what you all do fascinating because I'm not very good at it.

I'm looking for help with a headline, and have maybe a couple of general questions to follow up with. If you're game, I'll definitely appreciate it and thank you - if you're not, that's cool too. Probably when I get closer to being ready to do this I'll just hire somebody, but per below I might not and would like some free advice from people who are smarter than me.

So the headline is for this:
No Anchor Text

It's going to be a new edition of a (hard copy) book of mine in a couple of months. This book and the associated back-end drive about 80% of my income.

I make a decent amount through POS sales and have good distribution but my payout is much greater if I'm selling it myself, so I'm enhancing the content, raising the price, and want to push sales directly from my domain rather than retail.

1. Basically I'd just like suggestions for a killer headline if anyone feels like throwing me a bone.

2. I'm considering not doing any sales letter at all and just doing a 10-15 minute video of me with a copy of the book in hand, and a crap load of testimonials/reviews.

I know it's kind of like asking a baker whether or not you should be eating donuts, but my customers write very good reviews for me, which I think hit alot of the key triggers, deal with objections, etc. and so my basic thought is that if I include testimonials from people very similar to my target prospect that might be better. Would be curious about any testing or general thoughts related to that.

3. Not sure about the types of testimonials I want to be using. My initial thought is that I want to laser focus the testimonials/reviews towards being as close to the demographic of my target market as possible. However, I can get very high credibility testimonials as well (I'm flying out in 7 days for a new contract training the ROK army so I can get lots of military/special forces/intelligence types of bad asses, and I have a testimonial file with some pseudo-famous entertainers, rappers, authors, etc.) . . .

So if you were promoting your own product would you try to target your social proof to resonate as being similar to your market, or try to establish credibility or a mixture of both?

4. Is it possible to have "to much" social proof?

Anyway - I'm not looking for a whole critique or anything. Maybe just a headline if anybody feels like it but I'm really curious about structuring social proof.