IBFishing, do you realize how many fun, interesting and innovative things you can do with a lake your size. Free yourself of the constraints of needing fish to eat and depending on natural reproduction.
Raise huge HSB.
Experiment with all male BG, RES, Georgia Giants, Hybrid Crappie and lots of other species, hybrids and combinations of members of the sunfish family. Look at the incredible things Bruce Condello is doing with lakes the size of yours.
Put in just a very few female LMB, feed the dickens out of them and see just how big you can get them.
Have a catfish pond.
As long as you don't expect natural reproduction, you could have an incredible mixed species fishery of over a dozen species.
Pick out some species that are native to Texas but are seldom raised such as Headwater Catfish, Yellow Bass, Flier, Spotted Bass, Guadalupe Bass, Warmouth, Longear Sunfish, Orangespotted Sunfish or Rio Grande Cichlid. Then raise a state or world record fish in your lake.
Some other people can add to this list but you really can do some fun things with a lake your size.