This may seem like odd question ... but since i allready had my fair share of badly distribued statistic ...
(deleted 3 characters, since i did them wrong :D)
What exactly was stoping you in creating huge-charismatic Wizzard? O_o
(1) You would need to initially invest into both charisma and intelligence. Which means you would have much lower dexterity (armor class) and constitution (hit points)
(2) Throughout the game, you can raise your attributes when leveling up. This will usually go into your main statistics, resulting in intelligence 18-20 Wizards and charisma 18-20 Sorcerers. Distributing this to several stats doesn't work very well.
Also, the last thing this world need is bard. -_-
But Bards are very useful! You can arm your Sorcerer with them and whack Goblins.