Control Arm Help

[chevguy7]

I have recently rebuilt my suspension with ECE springs and shocks. I also have new Moog ball joints. The issue I am running into now is that my upper control arm bushings have gone bad. I probably should have double checked this while I had everything apart. The question I have is if it is difficult to replace the upper control arm bushings on your own. I already have them and could take it to a shop if needed. At this point in time I believe I would need to take the suspension apart by removing the lower control arm first from the "U" bolts. Is this correct? Thanks. Sorry for such a long question.