As for your questions about switching protaganists to get all of the strongholds, it probably won't work, as their is a variable set that prevents you from having more than one. You can use Shadowkeeper to reset that Global Variable after gaining a stronghold, so that you can have all of them. The name of the variable is: PLAYERHASSTRONGHOLD
Monks can't dual-class. This is part of the 2ED D&D rules. They are way unbalanced anyways, really weak at first and then over-powered at high levels.
If you want the other NPC's voices, extracted copies of them are here:
http://www.gamers-allegiance.com/
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"This place will be your tomb."