There isn’t really anything good to take as one circle before Fletcher except Scout.
Hunter is buggy.
Sapper needs Sapper 2.
Wugushi needs Wugushi 2.
QS1 is almost worthless unless you’re using Caltrops and Pavise for aggro grabbing.
Archer 3 in a Fletcher build is iffy. Twin Arrows (against ghosts/plate) and Multishot 15/15 are strong, but its hard to give up 5% on Steady Aim for it since Magic Arrow is most of your DPS as Fletcher and you want to make that hit as hard as possible.
A2 -> R1 -> Scout 1 -> Fletcher 3 would be fine as a more pvp oriented build.
Edit: I would honestly consider A3 -> R1 -> F3 as the Archer 3 costume is pretty great, and the trade off is pretty small.