Hey,
Posted this earlier:
All the fighter variants are fair game.
Anthropomorphic animals, I'd prefer if you throw me something and I put a LA on it, base it of one of the already existing anthropomorphic animals, there are no concrete rules of doing it, sadly.
Swiftblade is fair game.
Half-Fey is fair game.
MM 2-5 are core IMO, yes. So is PH2 and DMG2
Sorry for not answering on Domain wizard and Elf Wizard, both are fair game, since they are in allowed sources. (Domain wizard sure is good though)
I wont allow artic, since I can't imagine how it can be balanced to lose 2 cha and get 2 con, it's like the good stuff from a dwarf without the bad stuff (lose one feat over human, lose one skill point). Also, I'm doing this as a test to see whether it would be humanly possible for my players to get through this, and they don't have dragon magazines.
Oh and you are right, don't expect to get much beyond level 16.