Basically, as a buffer, forget damage min-maxing. You want to have Longstrider's shot up as much as possible. Hawkeye is the next priority, then the third buff is optional, I go for foxdodge, because the melee side doesn't need a target so you cam spam it in place, for trash mobs - and on bosses thornward for max damage buffs. After that, you just want to stay alive, and be quick on your feet.
Initial stats. Int and con.
Just put all your points into these. Hitpoints and recovery speed. You don't need dex or wis anymore.
Feats. (I'm human btw. So +3) basic.
Toughness 3 1 point in the others Swift foot 4 Battlewise 3 Lucky skirm. 3 Natures 4 Extra act. 5
This combo gives you zero cooldowns, esp. on ranged, and amazing runspeed. Also lessens aggro a bit.
Powers. Go pathfinder.
Aspect of Pack (offhand feated)/Primal instinct.
Hawkeye. Foxshift. Lonstriders.
Careful attack. Aimed shot/splitshot/whatever.
Gear. Doesn't really matter. Optional, Chest with 14+ AC, arm/legs/head with recovery defense and or deflect.
I use the borivan/omu gear: Ras mancas hat, puppets chest, enduring boots, and that 1 star borovian hunt spiders gloves, forgot the name. But to be honest the extra recovery doesn't really do more than shave a split second off cooldowns and give you a bit more AP.
Rotation. Spam everything. Don't forget slashers every now and again if you can be bothered.
Artifacts - whatever you already have, Thirst is cheapish atm. and a great debuff.
Enchants - whatever you already have. Recovery and defence or hp if you like. Lesser soul, and a debuff weapon if you like. Not critical unless you are rich and insane.
Pets - whatever you already have. Sellsword, tiger etc. from your dps build have a debuff too. If you don't main an HR, an augument is fine, again because we're not worrying about crit, arpen, or power.
Mounts - whatever you already have, swift golden lion bis, but don't buy one unless you already have one.
Mount bonuses - shepherd's, and champion's return etc. recommended, but whatever you like really.