It's been awhile since I updated this thread.
So far the koi are healthy, no major problems with the pond. A few months back the koi spawned non stop for 2 weeks straight.
I had 2 100gal kiddie pools setup for the spawn brushes. Those worked ok for a few weeks until I decided to spring for the rubbermaid 100g stock tanks. I just completed a DIY filtration system for the fry. The tank on the left has close to 900 fry and the tank on the right has around 50. I had to separate the larger ones since they were eating the weaker ones......
[video=youtube;lQ12L2rKZ0I]http://www.youtube.com/watch?v=lQ12L2rKZ0I [/video]