Your Jeep will leak sound in many places and is noisy as hell. The hush mat or dynamat is fine to tame some of the rattles you might have but it won't do much unless you can do the top too. The only place I did it was under the seats below the subwoofers. I would also consider doing it in the front foot wells because heat does come through the floor in the summer.
The doors are already heavy to take on and off and will only be heavier with dynamat. You may find that you never even have the doors on. I know I don't all summer. Same goes for the top, mine is on 4 months a year and hangs from my garage ceiling the rest of the year.