At 3 inches of lift, you should do something about the track bar. The axle is off center and you may experience a bump steer like feeling as the suspension cycles on the road. Re-drilling the axle bolt hole works, but can lead to problems later on. Track bar relocation brackets work for daily drivers, but can lead to breakage with more than light 4x4 trail usage. They are lots of adjustable track bars, the ones that use tie rod ends for the upper joint are the least desirable due to breakage of the tie rod end.
Longer lower control arms are recommended, but not required.