So, I'm not a big fan of the stuper buffs. Not going to lie, I'm not reading 10 pages of, "OMFG **** OREN, or OMFG THESE BUFFS MAN."
So, looking at this a bit, Orcs could do some bonus damage, I'm entirely fine with that, but it also brings issue to light. Orcs are stonger, yes, but they're considerably bulkier and slower. If they get a buff in power, they need a nerf in speed.
Dwarves are tough little midgets. They should be able to take a good hit, I would have just buffed their health but left everything else alone. Why? Humans have Iron Armed crossbows as well, thus the reason variations of the weapon require setting before use.
Humans, the most adaptive of races, not going to lie.. I have no idea what I would give them as any real adjustment would probably unbalance everything.
Elves, they're agile. I'd give them the edge with a bow, as steretype dictates and maybe a small boost to speed.
Halflings, non-combat race. Probably wouldn't touch them. Leave as is.
Kha, unarmed damage, positive someone has said this somewhere in here, claws.
Even with all this taken into consideration, I would only give out extremely minor advantages. Nothing beyond half a heart in damage and 3 hearts in HP.