Oh you mean that's what you already built this time, and you weren't saying that was your built during your previous (normal) game. I misunderstood.
If you want to build two mages that's fine.
If you want to build them to prepare yourself for fights, you can build both very similarly at the beginning (2 points in each magic skill tree, pick the best spells). And lategame you can decide to specialize them in different school (up to 4 points, no need to go up to 5 except maybe hydrosophist).
2x mage is "safe" because they have plenty of CC (not consumable like arrows) and good heals. Plus they control ground quite easily. So enemies are typically always controlled and don't even harm you much (even if they do you heal quickly).
If you interest yourself to crafting (to give Madora and Baidotr weapons), be aware that crafted weapons require high STR or DEX, so those are to be pumped up quite alot early (then it's fine).
