Doug,

As a quick look, I see no reason why your plan will not work. There are limitations and those have to do with the size of your grow bed. I am assuming the grow bed(s) are media filled. If so, then you will be limited to about 30 pounds of fish. With the amount of water in your system, it will require a little time for the nitrates to build to a level where you can grow plants, but it will also stabilize your system. This will allow for a slow growth of the necessary bacteria for fish waste conversion. The system will take some time to cycle but you need not worry about getting ahead of it due to the low fish density.

I am not familiar with raising your choice of fish but be careful to limit your total weight to what the grow bed/biofiter can handle and be sure to aerate your pound. Please read Aquaponics 101 on this forum to get all the numbers.

Oliver