I’m on my 2nd PA. Here’s the first (mk2 520 frame, 140mm dual air Revs, GD post, 2×9):
Capable of a bit of everything. Even moreso once I learned to ride with flats again. I got the itch for a FS as and bought a Trance, but then felt like it was making my technique lazy and built this beast up (mk1 520 frame, P2 fork and 29″ front wheel, 2×10):
A dropper post is on it’s way for the 69er, they just add a little more flow to a session.
If you get your hands on a new ltd 853 frame I think you’ll have one incredible frame. The 520 is great, the 725 will be a smidge lighter and the 853 even betterer.
Functionally, it’s burly but still has some give. The heavier 520 climbs fine and the shape gives you a lot of room to move for tech riding. The Cotic Soul is not as burly, the BFe may be more comparable. I gather that Blue Pigs are probably about the same level of intended use, but they have had production issues at times.
I suggest a dropper post, double chainring and mid length stem for all roundness. They still handle nicely with a 70mm stem, having tried both rigid and 140mm travel I reckon U-turn or Talas may be the way ahead. Then again 140 is very fun, you may never feel the need to shorten it!
DO IT!