George,
Way to go my friend! Let us know, if you haven't already, how the transfer goes.
I'm planning to do the same in a couple of weeks or so. Its great that you've gotten 8 inches size. I think you will have a very high survival rate upon transfer with your Tilapia in place as forage.
I think we may be getting a system established for Texas ponds that will be the envey of many and even a model for others to use. I know it has terrific potential for me and my ponds. Thanks.