I have owned and broken in a number of Brooks saddles. I have a Conquest (a predecessor to the Flyer), and I think that springs might be overrated. I currently have a B-17 (with an aftermarket prostate cutout) on a mountain bike, and don't feel that I need any extra cush that springs might bring. It is more important to figure which shape fits you, and then get to work on breaking the saddle in.
As has been previously mentioned, wallbike.com is a great placed to buy a saddle from, and you should talk to them.
What did you no like about the saddle that you have, and what is it about a Brooks saddle that you think will be different?
Handle bars are such a personal thing. I happen to like the traditional road bike ram horn style bars. Since I have broad shoulders, all of my road bikes have needed to have their handle bars swapped out for wider ones.
If you are feeling that stretched out, then maybe your LHT does not properly fit you. Your dealer should have at least done a quick fitting. Maybe you need to invest in a professional fitting. These are exspensive, $175+, but sometimes worth while. I paid for one, when I ordered my touring bike, and I am glad that I did.