I dont know how it compares to other ranged builds for dps, but I decided to go 12 fighter, 7 rogue, 1 wizard.
Haste boost 4, 1 extra action boost, power surge, kensai 2 /w longbow spec and fighter feats cover ranged requirements (including IPS, worth it); 4d6 sneak (5 if you take assassin 1, but ap are tight for it) and rogue skills; and of course the wiz is to qualify for AA, but also allows things like UMD free use of stoneskin and flame arrow wands etc.
With power surge, haste 4, and multishot going on attacks that have sneak damage, IPS and AA imbues, burst damage is pretty darn good. Other times... well DPS depends more on the situation for my archer than it does for any of my melee.