Your location sounds like some excellent bass country!

Also great that you are so close to Overton's.

Lots of threads on catchability, versus other bass traits.

I think(?) Floridas would be best for the absolutely heaviest bass you could produce in your pond. However, if you mostly want family to have a fun fishing pond for LMB, then Northern strain might be the best. Lots of excellent bass ponds in Texas long before Florida Bass were introduced.

Are the two types of BG going to be your only bass forage (after the FHMs are gone)?

Can you get threadfin shad at Overton's? That might be a great supplement and I believe Lusk really likes them for Texas ponds. (Also, with the TFS, you might easily support a few HSB.)

Good luck on your pond project! Can't wait to get fishing reports in a few years.