Technically if the camber is off because of the BJ being worn AND YOU HAD AN ALIGNMENT DONE WITH THE BAD BJ, then an alignment could be needed (camber affects toe).
But if you didnt have it aligned with the bad BJ (most alignment guys check the BJ's, tie rods, etc before attempting to align), then the alignment is off now, but should be restored to being pretty correct once the new part is installed.
Some shops will do a computerized alignment *check* for 15 bucks or so. That might give you peace of mind.
Also, if your control arm bushings are worn, consider getting new control arms. They're a great deal if you need BJ's and LCA bushings.
If you want to try the BJ's yourself (esp if you have a friend whose done suspension work if you havent), we could walk ya through it. Lots of us have replaced them ourselves.
Good luck.