Erod, I chuckled when I read your title, "Experienced Advice Needed." You opened yourself up to so much advice that you won't know which direction to go. Seems like there's plenty of advise and the way this forum is going lately with all the "contrarians", and me feeling a little bit gnarly today I thought I might as well get in too.
First, you can be the best judge of what you want. By that I mean, let the winners circle tell you. Get some past issues of BPCN or ASSRJ and look at what's winning. Example, When somebody tells you that this barrel is better than another, it's a crock in my book. I went back in some BPCN magazines and looked at what is winning in some different events throughout the country and here's what I found. In one Pennsylavania shoot, the first two places where Pedersolis, 3rd a Grn Mtn and fourth a Getz. Of the first 10 places, 4 where Badgers 2 Gn Mtns, 2 Ped, 1 Getz and one Shiloh. In another Pennsylvannia shoot, 1st place was a Snover, next 8 of nine where Badgers. 8 were 45 cal. and 2 where 40's. At a Michigan mid-range shoot, 4 out of the first five where Badgers and one Shiloh.
At another shoot in Avenal California, 1st was a Shiloh, 2nd a Badger and 3rd a Douglas. Of the next 7 places, 4 were Badgers, 2 Grn Mtn and 1 Shiloh. Of those top 10, 8 where 45's, 1 a 44 and 1 a 40 cal. These are just some I quickly gleaned so for somebody to say that one barrel is better, I say take it with a grain of salt.
Here's more examples of advice that one gets on the internet. When I first started shooting, nobody could get PP to work and now it seems to be the bee's knees. Same with the wiping technique. Nobody could get consistency and now all of a sudden, it's back and many are doing well with it.
Barrel length is another issue. Everybody has an idea. Long, short, fat and stubby. I know that I have barrels from 30" - 34" and I have yet to experience fouling at the end of the bore in any of them even though I was told never to go over 30". Maybe its a western USA phenomena.
Don't start chasing your tail over what others are doing. You be your own best judge and build what you want. Build it around the discipline that you want it for because this sport is contagious and before long you'll want another. Watch what the consistant winners are shooting and I can say that I have observed this with regularity; 45's rule and the heavier rifle the better it is. Also, you don't see the mini's with fast twists near the top very often but I do see more of them coming up for sale. Oh, yeah, good shooters just don't sell their tack drivers.

Have fun! Bob