But since in the future, it will be shot 10 times more often on the range than in the hunting field, I guess I would go with a milder, cheaper round such as the .30-30, especially since the OP lives in Florida and not someplace like Montana. ( Nothing walking around in Florida or the surrounding States that cannot be easily taken with the .30-30.)
If not .30-30, then maybe .the .308 Win.
Ruger made a limited run of No. 1s in .30-30, but totally botched it by putting a short barrel on it, which resulted in a butt-heavy rifle that doesn't point. Insanity. Not sure what it would cost to get one of those and rebarrel it in .30-30, plus pay to fix the hanger issue. But, if you could get all of that done for under $3,000 then that would be my second choice.