What do you first is fix those leaks asap. That can cause the tranny to fry up shortly after. I got an extra tranny coolor installed with a puller fan and had it run "in-series" with the transmission cooling system. You wanna make sure the extra tranny cooler is last in the series before it goes back into the tranny. Mine has a puller fan on it and is some-what below the bumper line so I plan on adding a switch to manually shut it off when doing any type of water crossings.

For the future too, I heard Water Wetter works if you pour it in your tranny before you go wheeling, of course after your cool down or before you start the vehicle in the morning. Fix that leak first and go from there. Good luck,
Angelo