Danny, you will have several issues to deal with. When the TJ kits go over 3" they usually have both upper and lower control arms in the kit. I think you will have problems with the pinion angles. You may also run into driveshaft problems with the slip yoke on the rear driveshaft, unless you have a slip yoke eliminator. With a standard drag link and tie rod and even a drop pitman arm you will experience a lot of bump steer. You may also encouter problems with the track arm being out of alignement and contributing to bump steer. (******* definition of bump steer - It wanders all over the road.)
However, in my opinion for the price it might not hurt to try it and see how it all works and if not take them off. I ran a homemade suspension lift on my TJ using stock control arms, ZJ springs and homemade spacers for a couple of years without problems but I only had 3" of lift total. If you do put them on be sure to take it straight to the alignment shop to check the caster in the front end. If the rear does not have the adjusters it would be a worthwhile purchase. The front end caster angle is usually the biggest contributer to the TJ "DEATH WOBBLE".
I have the spacers on my current ZJ and have a lot of bump steer even with the caster corrected.