I think for the prepper, the way to go is BG and LMB combination. How they are managed is up to each persons circumstances. This core can be strayed from with other types of fish, but they all are not that dependable. This philosophy has been discussed in a few other threads, but I feel any other types of fish are not a realistic approach if things got really dire. If there is no electric, a reliable aeration becomes more difficult. What about storage of a fish that has to be all harvested at one time, like tilapia. At least with BG, LMB one could go to the pond, at almost any time of year, and catch a meal. I don't think I would rely on more than one meal ( for two people) more than once a week. Anything more would start to become iffy unless managed like Ewest said.
This is just for the "prepper/pond as a food source" line of thinking. I know most wouldn't want to do this, but it is interesting to think about..... Just in case
I wouldn't think LMB could produce enough to be a viable year round food source based off the #s per acre. If it takes 10# of BG to make 1# of LMB, and BG spawn 4-5 times per year, why not skip the energy to raise the LMB? You could fertilize for cheap, so wouldn't have to feed. Again, this is strictly from a prepper point of view, where restocking every year isn't an option(HSB, CC, tilapia), and harvest is very heavy.
On a 1.5 acre pond that could support 100 LMB. For those LMB to grow 1#, they would need to eat a 1000# of BG. You could only harvest 20 LMB per year or w/o bass you could catch 1000# of BG every year..... Correct?
All I know Brain is that I can harvest more LMB than that. And this is just a preference to me, but I rather clean 10 LMB in a 12 to 14" range rather than small BG to get the equivalent. As Ewest told me when I first started, balancing this combo so either grows sufficiently, is like walking on a knifes edge. Which ever fish you would want to lean towards for the staple fish, you need to manage it carefully.
Here's one thing I think is hard to avoid. To get more than one meal a week, Either BG or LMB is going to be need feeding. Perhaps I am wrong about this. Those 1000# of BG you refer to, are of a smaller size (3-4") that a 12" bass can eat. I sure wouldn't want to clean that size. Now if you tried to raise more BG instead of Bsss, at what size does the BG no longer benefit from fertilizer and they need something more substantial? I would say at 4", thats why if you want Large BG you start harvest the bass when they get 14-15". That leaves more food for the BG. If you would increase the number of 4" BG to grow a bit more for harvest, their growth would slow unless you added feed for them of some sort. So I see it as needing to feed either types of fish, if you want more.