You should say you would like to see the range of AD you could get from doing it. This would let you know if you are capped or have first run Daily Rewards left for it.
yes, you need to get both characters into IWD. Once you get the first one to the town log out and move to the other. You should see the quest giver once you go to the bar in the town.
It may not be better then all of T1s, but it has good stats. You may go from that one strait to a T2 seal, T2.5, T3 or artifact weapon. eDV is a pain in the...