Also, if the Forbidden Lands elves still follow the "noble elves trope" it might also make sense to restrict "Raiders" (distinct from warrior) as a class not open for those of the elf race?
In our modern "me" culture everyone wants everything all the time, but I think, a fantasy setting has more character if it is not afraid to use some old tropes if those tropes tell good stories.
Don't know if I would call a race (elves) that enslaved another race (orcs) for several generations noble though...
And as for the race-restriction on classes, as long as you can think of a believable background for your PC, I think they should all be free game for every race. The orc skald is actually a great example for an orc variant of the minstrel-class. Or warrior poet. Rockskalds anyone?