They will work fine. I am running CJ7 doors on my TJ right now. Look at my avitar or jeep profile picture those are the CJ7 doors. The A pillar angle, door shape, hinge pins, and hinge position are all virtually the same. All you need to do is adjust the door for proper gap all the way around, add mirrors, and convert either the striker or door latch so the tub and door are the same. The striker is easy to make with some 1x1 angle iron about 3" long.
Now having said that I would not pay anywhere near TJ door prices for a set of CJ7 doors.