I am following the spell guide in the ToB manual and from game experience.
Your Sorcerer can have a max of 5 different spells, from spell level 1 to 7, and 4 different spells, from spell level 8 to 9.
ToB allowed you to have more spells, which was good.
Yes, Remove Magic is party-friendly, but it cannot remove stuff like Confusion and Chaos. Keldorn may be able to cast very powerful Dispel Magic, but if he gets confused...
It
is possible to live without Dispel Magic, but I usually find it tends to be casted a lot.
Sadly, Emotion is usually underestimated. True, enemies in ToB have low saving throws, but that is what Greater Malison is for. Also, Emotion affects an area, so there is a good chance that it will knock out someone.
Feeblemind is extremely potent against the big stuff, however, you need to cast Greater Malison first to make it effective. It essentially reduces the target into a punching bag, literally... Firkragg was a pushover because of this spell.
Do not at any cost, choose Spell Thrust, wait for Pierce Magic.
Judging from your posts, I take it you intend to have Keldorn, if that is so. True Sight will not be needed.
By the way, do not rely too much on Wish, even with 25 WIS, you seldom get the option to rest and rememorise spells. Although the option to boost everybody's stats to 25 is a lark.
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If not a Sorcerer casting total oblivion, then a Paladin meting out justice. Otherwise, I think I will just be a bard and torture my enemies with, "My Heart Will Go On".
Platinium Sorcerer of ALSB,
Aerie
Loving
Sacred
Band! She's MeowRrrr, and more!
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Baldur's Gate Item Mart