Mage main pc for bg trilogy

So after a lot of consideration, and minor power gamey single class playthroughs I think I'm going to do a trilogy run (dragonspear included).

I realize there are ideal pc classes that can aquire super low thaco and ac plus spell immunities, but I crave a run through with more arcane spells but without the exploits of a mage multi class or sorceror cheese.

Would a party with 2 tanks, 2 divine casters and 2 arcane casters (main pc and npc) be a fun playthrough?

I'm planning a good playthroug with:

Bg1:
PC conjurer
Minsc
Jaheira
Khalid
Brawhen
Imoen (thief till max traps then dual mage).

Bg2:
PC stI'll conjurer no dual
Minsc
Jaheira
Anomen
Keldorn
Nalia >>> Imoen.

I always waneed to do a playthrough with more magic and any other playthrough would lead inevitably to more power gaming. I just wanna know if the following playthrough is plausible on normal and fun without power gaming stats like an invincible fighter mage or a suoer low thaco kensai etc etc