Info on cube aquariums

[windcoast reefs]

Hey Everyone!

I found a giant cube aquarium ( around 90 gallons) that I was looking at purchasing. I do have a few questions that I hope everyone can help me out with! It looks like a really nice set up, but it runs metal halides and does not have a chiller. Do you think I will need a chiller for this tank or would it be fine without? Also have you ever had a tank that has the refugium and sump all built in to the back of the tank? Does this design have any benifits or flaws that you have heard of?

Thanks for you input!