TheGrog - My tank is a 90 gallon (not set up yet). As far as circulation, I bought 4, 4" IceCap fans, that have a probe that adjust themselves to the temp (2 blowing in from the top, 1 blowing in on each sde), as well as having an open back on the canopy. both my bulbs are 10K, Coral bulbs so I am good there.
Say - I bought it off of a company called aquariumlights. Great customer service, and even let you chose between 10K and 20K bulbs! They have a number of different wattages and whatnot. my username is birdies29. Feel free to do whatever.
I am planning on doing a DIY canopy on here within a week or 2, so feel free to check it out!