I currently have a Yellow Tang that I love and would like to keep. However, I really want a Powder Blue Tang. I read that both can be aggressive towards other Tangs but they are very different Tangs and are not closely related (so it seems). It'll be a while before I get anything but I wanted to see if you all had an opinion on this? Do you think they'd get along or would they fight and be miserable?

While I'm on this subject, here are my ideas for fish:

1 - Yellow Tang
2 - Clown
3 - Powder Blue Tang
4 - Lawnmower Blenny
5 - A group (4 or 5) of small schooling fish (Anthias or Chromis)
6 - Flame Hawkfish
7 - (NOT SURE ABOUT THIS ONE!) Flame Angel

I have 175 gallon tank so I think the bioload should be fine. Do you guys think it's too much or do I have room for more?

Also, here are some fish I will be getting rid of most likely (came with my tank purchase):

2 - 1' Engineer Gobys
1 - Blue Damsel
1 - Yellowtail Damsel

Any other fish suggestions you all may have, I'd love to hear them! I'm trying to go for a combination of nice looking fish but lots of personality.