Stick with LMB, they are not in the pond for angling but as a control measure for any HBG reproduction that occurs to assist the CC in controlling it.
HBG are fast growers early on. Pure BG will outgrow them in the long run, but with the pond conditions you have, the long run may never occur. The idea is, HBG reach max size in 2 or 3 years, as opposed to BG which take several. With regular BG, you will need a reproducing population of bass and then all you have is a typical LMB/BG pond. You can do this, but again if the pond goes down you're starting all over again... Plus, this pond seems to fluctuate widely in size and hence biomass carrying capacity. This is easy to handle with a put and take fishery such as HBG/CC, not so easy to manage with a typical LMB/BG fishery.
