Here's are a little more tips that maybe someone will find usefull 
These are the common builds for archers:
Full STR - Pure damage.
25 SPR / Rest STR - Also damage built, with people that likes crits.
I don't recommend putting any END in free stat, find END in gears instead.
I don't recommend END neither, cause archers have no shield and getting it from gear it's a good idea but there's one more build that is nice(maybe not so popular but worth at least trying. 50 DEX 25 SPR and rest STR, maybe your dmg won't be as high as with Full STR build, but if u are kitting a lot is good, 50 DEX will give awesome evasion and aim which means that mobs are missing on you very often, 25 SPR it's good critical bonus and with using AOE it is helpful, and rest STR for dmg. If u will buy +9 weapon which in fact isn't so expensive cause archers don't have shields I think you shouldn't complain. It's also good build for pt and u can handle quite nice ammount of mobs so you are good as a lurer.
Where should I put my skill points?
Power Shot - 5 points in power.
[Optional] Aim Shot - 5 Points in power.
Nature's Mist (Level 51) - 5 points in power, 5 points in cool down, 5 points in SP consumption.
Piercing Shot (Level 75) - 5 points in power, 5 points in cool down, 5 points in SP consumption.
I recommend not to add 5 points in SP consumption, mana is not so big problem and I think that points should be used to increase power, archer are not clerics, they don't have to heal with their mana but deal dmg. So if u are using Multi-Shot common u can also add 5 points to power. Leave poison, venomous and bone shot without any points because they aren't much usefull. And I think that Piercing Shot and Nature's Mist points for power aren't bad idea but if you are PvP much you can add that poinst for Cooldown to Power Shot or Aim Shot, but personally I would leave them in AOE skills
Bow or Crossbow?
Bow up to level 50. Optional switch to xbow after level 50 for extra damage for AOE.
I would choose X-Bow if AOE and for Pvp bow
Threaded Mode