If they are same size, I agreed in this order.this is the order i would add 3, 4, 6, 1, 5, and then 2. coral beautys are not very agressive so i think you will be alright.
it's a 100 galWhats the size of tank? Angels, even dwarfs should be added last
I have live rock alreadyI should also add get live rock, your angle and tang will benefit from having extra stuff to graze on