As for builds it depends I like to play Warlock/Hellfire warlock, Favored soul/ Warpriest, or Wizard/Red Wizard of Thay. Or you could go with any Fighter combo class.
Of the NWN2 mods, are any of them comparable in length to the OC? I don't really like short little mods unless they're a series. I am looking at The Lake of Sorrows pretty hard though. Not sure what level that ends up at though. I almost always play some type of caster and cleric is my go-to.
I also prefer solo play as much as possible, so extra credit if someone (couch) can point out the best solo character modules.
Fabulous @Couchpotato;! I'm going to try to do all of these. Are there any games where you strongly suggest using a stored character rather than rolling new? I almost always start fresh in mods, but wanted to get your input.