Well I ordered everything. 
I followed gagaliya'a advice pretty closely. Everything came to about $200. I didn't see any negative issues with the Azoo regulator and it's really inexpensive. I also went with the 10# cylinder. The 20# wouldn't fit under my tank. Now to pull one of my old canister filters out to test. Time to get rid of the HOB.
Thanks for all the help guys.
Jim
I followed gagaliya'a advice pretty closely. Everything came to about $200. I didn't see any negative issues with the Azoo regulator and it's really inexpensive. I also went with the 10# cylinder. The 20# wouldn't fit under my tank. Now to pull one of my old canister filters out to test. Time to get rid of the HOB.
Thanks for all the help guys.
Jim