I have no Campeche experience but I know smaller tarpon like they have down there well. If you have a 7 wt, I would definitely bring it. You'll be happy if you are making a lot of casts. A good specialty rod would be a short 8 weight. I throw those a lot in tight mangrove areas like they have there. Swing weight is real light and a bit easier to fish in tight quarters. Have fun....