No problem. 
I'm not sure, but during the last battle, there are 5 slots, one for each race, and one of mine was empty, so I'm wondering if you need all races? I'll dig some.
For the end party, use a mix, but make sure the party you leave behind can handle itself, because you'll actually switch back to them during the final push.
Having an archer for my main character really helped with the end boss, because he likes to jump around. Also being able to heal others was really important. Irving eventually helps out and I kept him healed while he did tons of damage to the Archdemon, which kept it off my party. Then I just focused on the darkspawn that popped up while my arrow-of-slaying recharged, which I'd hit the Archdemon with.
I'm not sure, but during the last battle, there are 5 slots, one for each race, and one of mine was empty, so I'm wondering if you need all races? I'll dig some.
For the end party, use a mix, but make sure the party you leave behind can handle itself, because you'll actually switch back to them during the final push.
Having an archer for my main character really helped with the end boss, because he likes to jump around. Also being able to heal others was really important. Irving eventually helps out and I kept him healed while he did tons of damage to the Archdemon, which kept it off my party. Then I just focused on the darkspawn that popped up while my arrow-of-slaying recharged, which I'd hit the Archdemon with.