Some questions Options

[Shadan]

I am planning my new run in V5, but I have some questions:
1. I haven't found Limak's Brain in my previous 4.2 run. Where should be it? (If this is a spoiler, send me in PM pls...)
2. I have read somewhere on this forum, if I have Valygar in my party, I can find 2 Dagger of the Star +4, one for his improved Katana and one for Grandfather of Assasins. Is this right?
3. I am planning the following setup:
human vagrant ptrotagonist
human ranger9 > cleric dual
Valygar (SKed to Swashbuckler > fighter dual class)
Nalia or Aerie (SKed to wild mage)
Haer'dalis

My question is twofolded:
First of all I have never changed kit and class in SK, so I don't know how to do it. Suppose I have to get the NPC in the party, delete all what I find at him in SK, then give a class and XP, and make levelups. Am I right? Any suggestion what should I care for?
Secondly I would like to play wild mage. Sadly there isn't any improved items wih extra spell slots for mages except protagonist, Nalia or necromancer... I would like to play with Aerie cause of romance, but I have found any items as extra spellslots. Since I have only 5 chars, any extra spellslots would be great. Any suggestions? Or shall I leave her and take Nalia with his ring?

Thx for answers and help in advance.

[Aegor]

Well I've copied this paragraph long time ago and saved it to my BG2 walkthrough, I think it was a post from the Sorcerers place, it explains the SK class change pretty good:

"Basically, you set everything to 0 before you change the class.

Level goes to 0, thieving points go to 0, delete all proficiencies, all affects except COLORCHANGE (gives the NPC their own flavor to have off-standard colors), innate spells, etc. HP set to 1 since 0 won't work, but saves and THAC0 you don't have to worry about (though it wouldn't hurt to set them to 20 just in case). And of course you change the class.

When you get back into the game, they'll PING and you just level them up. Saves, spell slots, and THAC0 are taken from tables. One more trip into SK to remove that one extra hit point and maybe add spells to the spellbook that you think they should have started with if they're a wizardly class, and you're done."