The endgame build is in the midgame section.
Smax Paragon is only worth it when you have no charms and are new to the char. At end game the difference between a 1pt paragon and an 18pt paragon is 32 vit per gem (or less) which is only 1.6k life.
I also never saw any reason to not have Wyrmshot + Barrage + Phalanx available in the same build. The only thing you sacrifice there is Defensive harmony - which is useless in 99% of places for a Bowzon because you should not be getting hit anyway, it only has a use in fauzt. Remainders go in War spirit or Barrage with my build and I prefer War Spirit since CB is useful for all skills.