Sticking with core it's probably for the best then. Maybe the supplement rulebook. 

Not really sure what I';m going to use class wise myself though. And if you need any help on the DM side, I still remember a few sources that will help if you need/want them. http://www.dinglesgames.com/tools/MonsterGenerator/dnd35/ 

I'd offer to Co-DM but we're still low on players. :P