How about a bunch of these. Acro capable, fighter/T-6 like feel, decent legs for cross-countries. Sure there's some assembly required, but once its all said and done they'll come in about $125K each after paint, avionics, tax, title, dealer prep, etc... put six or so at at each drone base, O & M dollars would be a ton less than maintaining a bunch of Tweets or T-6s.
Meanwhile, T-53s while super nice rides, come in around $380K plus.