Keri I really like your prop0sed layout.
Perhaps I will try to build some caves and overhangs on either side but also leave a large space in the middle for the fish.
I now have approx 170 lbs of 4 different kinds of live rock to work with.
Im away working so I havn't seen how full the tank is with all of it in but I am almost certain it will be too much.
By having 4 different sources of liverock in the tank will I have a good biodiversity of little critters?
Is 4 enough or should I look to trade for additional sources?

I did the canyon thing on mine and a couple of caves as well. Not quite Oregon Reef style but I only had 24 inches of depth to work with. I still ended up reworking it a few times to get it right but thats what the hobbys all about.
The fish like it as there are plenty of places to hide and sleep. The other plus is good water movement throughout.

Here is my reworked aquascape.

http://img.photobucket.com/albums/v3.../newscape1.jpg

http://img.photobucket.com/albums/v3.../newscape2.jpg

http://img.photobucket.com/albums/v3.../newscape3.jpg

http://img.photobucket.com/albums/v3.../newscape4.jpg

http://img.photobucket.com/albums/v3.../newscape5.jpg

http://img.photobucket.com/albums/v3.../newscape6.jpg

http://img.photobucket.com/albums/v3.../newscape7.jpg

http://img.photobucket.com/albums/v3.../newscape8.jpg

Looks real nice JDigital.
I think that is the first time that Ive seen powerheads coming up from the bottom.

I would recommend that you get 3/4 of what you need.
That way, when when you see a nice piece with a nice design or polyps and coral on it, you can by that piece because you will have the room.
If your tank is large enough the addition of one rock won't cause the tank to go into a mini cycle.

No powerheads... just closed loop returns.. (unless there called Powerheads too?).. lol

Would anyone happen to have any insight into this question?
Thanks
Oxy

I would think 4 would be fine. Most tanks start out with just 1 or 2.