Another player needs help with class

Hi. Yes, I know you're bored with all that stuff about choosing class, so I won't ask "Which class is the best?" etc. because I know there isn't the best class. So I'll write what I want from the class and what doubts I have about every character. So:

1. PvE - I don't care about it really. Of course, it would be nice to have good PvE char, but I can also play horrible PvE class, it's ok.

2. Money - If that class needs a lot of money, that's ok, I'll handle it.

3. PvP - That's what I'm about:

a) PK - Yes, I'm very interested with this. I'm gonna play in PvP severs obviously. I care only about endgame PvP, I don't care if I'll be killed all the time during earlier levels
b) TW - Yes, yes, yes!
c) Overall PvP:

I) Low lvls - don't care.
II) Mid lvls - don't care much
III) Endgame - this is the only moment I care about

Now, questions and how I feel about classes.

1) Blademaster: If I will be playing BM, I'll choose all weapon path. I really like BM's versatility. But as far as I know, BMs are "pounds" in massive PvP and TW and that's the thing that worries me. Their ability to PvP is a thing I'm not sure about.

2) Wizard: If I will be playing Wizard, I'll choose pure build, with Arcane, cause I know that LA is better only to some point and later AA starts to shine. I love Wizard's damage and their endgame skills, like Sutra and Undine Strike. Wiz is the class that I consider in 1st place, cause they seem to be perfect PvPers, especially on PvP. How they stand on PK? And, how are they in TW against Psy, Sins and Archers?

3) Barbarian: I'm not really sure about them. They seem to be PvE class, not PvP, although Demon Sunder + Demon Armageddon seems to be sexy combo. Can you tell me, are they good in PvP/PK?

4) Venomancer: Not for me.

5) Archer: I heard they suck at endgame. If that's true, I don't want this class. Also, I think that Wiz/Psy would be better choice of range DD.

6) Cleric: I think Cleric isn't for me. They are support class and I don't think they can PK well.

7) Assasin: It's class I consider in 2nd place. Invinsibility and sneaky attacks are thing I love. I know they are perfect PKers, but I heard they suck in TW. My imagination about myself as a Sin in TW was that I sneak attack the most dangerous enemy, then go back to stealth, then kill next one... Is that how Sins work in TW?

8) Psychic: I'm not sure about them. Wizzies seem better than Psys to me, although Voodos spells are great thing and some of their spells are really great.

I would be really, really thankful for answering to my post. I know it's long, but well, I hope u'll find a minute or two. Oh, and I read all guides to classes. Thanks b:victory