Thank you very much for your reply, specially for the links. I have checked them, and I have checked some other topics as well. I think I will be going for the 3rd build- Rogue-Mage hybrid for my 1st run.

So, I think I will focus on an Intelligence based character as I have seen in the 'Character Optimization' topic.

Just one question- until I get the Battle Tower, except my Dual-Wielding and support magic / skills, what offensive spell should I invest in? About this, the opinion seems to be mixed. I was thinking about the Magic Missile spell, but bows seem to do the same thing. I will use ranged attacks mainly for pulling / weakening enemies before they get to me. So, any advice on that would be helpful.