Skyrim - Character Build

Okay so I have started playing Skyrim again and am looking for a good character build but I am unsure of what to go, I am using the alternate start mod so I can start as someone like a bar tender or left in the wild (I prefer this setup because I have to survive with no money or weapons).

Anyways I only have the Dawnguard DLC so I can use vamp lord, but this is where my first question comes in, Vampire Lord or Werewolf? I have little experience with each, last time I played Skyrim I had a sort of tank build, then I went for a ranger/stealth build so I never really relied on an alter form, I was rather beastly on my own ;)
Anyways which is better? pure damage and excitement really, I want to be super bad ass :)

What should I go, I have been Ranger and Tank as said above, but what other classes is there, I want to do as much as possible in Skyrim so I would like a class that is strong at the beginning and keeps up like that at the end, I dont mind a little bit of difficulty always up for a challenge :) Also I havent decided on race, I was thinking a Dark Elf incase I picked a vamp lord to mitigate the fire damage weakness, but what would you advise.

Which guild should I join first? I am tempted with Mages guild more so if I went some sort of magic person, I have completed Dark brotherhood, Fighters and Thieves guild, I enjoyed them all really but never got through mages guild questline.

So yeah ideas on what I should build an alter-ego I should go?

Thanks! 

Having racked up over 1000 hours in Skyrim, naturally I've played a lot of builds. Whenever I need a new idea I usually take a look at this site. It has loads of different role-play builds, as well as straight up powerplay builds. You'll at least find some good ideas here.