Just buy the single replacement control arm mounting bracket you need from Jeep Lift Kits and Suspension Products direct from Rubicon Express
and be done with it. A welder shouldn't charge much to cut off the old bracket and weld on the new, especially if you could just find a local Jeeper who also welds. I had to do that once before I got my own welder and I think I paid him $20.
Neither would I recommend buying a lifetime alignment package since it sounds like you're not afraid to work on your own Jeep. The only thing that usually ever needs to be adjusted, alignment-wise, is the toe-in which you can do on your own in ten minutes with nothing more than a tape measure and wrench. With just the usual care, your toe-in will be just as accurate as what the latest whiz-bang alignment rack can produce.