Oneal - I really wouldnt rush. This is a marathon not a sprint, and while I completely understand that you don't want to spend decades waiting, you probably have nothing to lose by going to the first couple of NHS sessions and seeing how things are panning out. The private option is always there.
I'm not in any position to hand out criticism or advice, because back in my day 30 years ago there were virtually no guidelines, and even then I drove a coach and horses thorugh the middle of them, and ended up doing things my way with very little regard to due process. So I do completely understand the feeling of wanting action.
I suppose what I think with the benefit of three decades of hindsight is that it does no harm to try both routes and see which seems to be most helpful for YOU. Some people find the NHS does wonders for them. So I wouldnt prejudge it, and more than that, use your own first hand experience, rather than relying on what any of us say. The NHS may be slightly slower, but they are thorough in their investigations and they do genuinely work hard to make sure you get the best outcome.
Read some of the stories on here and you'll soon realise that while a few of us (me for example) are disgustingly lucky, some people do have a pretty tough time postoperatively, and through absolutely no fault of their own. If you are unlucky then if you have gone through the NHS route you do at least know that no stone was left un-turned and that your decision was rigorously tested.
If, like me, you take matters into your own hands its fine if you are as lucky as I was, but I do wonder how I might have fared if I had come up against some of the bad luck and obstacles that some people have. At that point its just possible I might have been less well prepared, as I completely avoided any sort of testing before leaping into instant surgery with no RLE or anything. I know that's not what a private clinic does these days, but all I'm trying to illustrate is that this is a big life changing decision with consequences.
To be clear I have no regrets, but I would still say take all the time you need and don't rush...