Well, nobody has offered an advice to my original question. Am I imposing the right size limit?
I think you got your answer in the first two responses.
No one can answer your question without a ton of valid sampling of the current fish populations in your pond.
There is no "one size fits all" answer.
Sorry that we couldn't be more helpful, but re-read those first two posts and try to grasp exactly what information they were attempting to convey.
(An additional "sorry" for my bad dad joke in your thread. It is fairly common on Pond Boss to get some slightly off-topic banter going in the threads. I am certainly one of the worst offenders!)