First charcter DEX Mage?
My first character is a mage, Dex build. Int has more damage but dex gives haste which responsible to Casting speed and Cooldown, the more skill to be cast the easier to kill mobs which is needed. I lose 200 matk but it gave me -2.7 secs variable casting on lvl 8 soul strikes(2.5 cspd, lvl 10 at 3 cspd). Soloing Normal GTB is easier since I do is spam that skill and take damage. My weapon was 1 hand staff(mdmg bonus, mpen) + shield(hp,p/m dmg reduction, mdmg bonus,haste) due to the stats and card sockets.
Weaker but can spam skills easilly beat mobs, a lot tankier cuz of the shield, MP pots consumptions is high, not a problem due to its easy to get zeny when became wizard.
Don't bother soloing GTB hard, needed to be 2nd job at least to fight it.