Dave, would you put in more hybrid stripers or none at all? They are not that important to me but thought a couple of lunkers could provide some surprises when we are fishing.
Are you planning to feed? If you're not feeding, I'd stick with your number. When I first tried HSB (at the urging of my fish guy, and against my reluctance), I put (5) in a 4.5 acre pond. I didn't see them for a year, but when I did, they were balling up bait fish and creating melee' on the surface of the water. It was AWESOME!!
Also, with your depth of 16', I'm guessing you'll have some nice open water. As such, I wonder if threadfin shad might be a nice addition to the forage base. They might have to be added each year, but other Texans should know the answer to that.