I'm a wood elf and i'm going for a hunter build.
I use dual daggers and a bow.
The skills I train are:
Illusion
Light Armor
Archery
One-handed
Sneak
Pickpocketing
Oh and now and then I do smithing just to make armor..
Now my questions are :
1. Should I join the vampires or should I join Dawnguard?
2. And after that, what wout fit me better according to my skills ? Werewolf or Vampire Lord
For your build i'd go vampires every time, as a vampire you get a permanent +25% increase to sneak and illusion, allowing you to remain undetected more easily and affect higher level enemies with your spells.
The vampire armour looks awesome in my opinion and there are a lot of benefits for a hunter such as night eye, invisibility, detect life etc, you also get up to 50% resistance from frost which suits a hunter.
Your a sneaky archer kind of build so you want your weapon to be silent right? Crossbows are not silent, and the best bow and arrows enchanted do more damage than crossbow shots and have a much higher damage per second.