Installing lower control arm?

How hard is this job? Im replacing the upper control arms, perches, springs, shocks, and ball joint but was wondering how tough installing the lower would be. I just installed all new disc brake calipers, rotors and lines and would rather not have to remove them again, can they stay on while I replace the lower control arm?

Thanks,
Jim

Sorry for the double post, it dind;t look like it posted the last time.