Lots of used Carolina Skiffs out there in the 16’ range.
Basicly a f/g Jon boat, with a center console and the seating requirements you need.
I wouldn’t go less than 48” width bottom on an aluminum Jon for 3 people.
I don’t like all the seats in many of the Jon boat designs, but then I don’t have 3 people on board.
Check out Richard Genes V front Jon, I believe it’s 15x52 and maybe 16.
Lots of open space which i like also. A cooler can double as a seat.
Made by Alweld Boats over in AR, they have a nice line of different styles built better than some out there.