I assume you're just replacing the control arm bushings? If so then there is no need to remove the coils/shocks. You can actually do it with the truck on the ground if you want, just work on one control arm at a time. R&R the bushings on the arm, reinstall and then move on to the next arm. I replaced all 4 on mine that way on my 2nd gen and they slipped right in, zero problems.
If it makes you feel safer (and it probably is) just barely raise the truck to put jack stands underneath the frame to take most of the weight and use a floor jack to maneuver the front axle around as needed.
With either method it will save you a lot of cursing if you do one at a time, the other 3 control arms will keep the axle located where it needs to be. If you pull all 4 at once you'll be wrangling a Dana 60 to get everything lined up again in which case DavidC's suggestion to remove the coils might make that job easier.