Floor jacks will suffice for the entire job, in fact they are necessary in realigning the control arms to get the bushings back in.
It took me a good three days to complete this, but it was my first trip through the front end (and I did the rear shocks also). Next time around I could do it in 1 day. The extra time was spent cleaning 42 years of gunk from everywhere, replacing the brake line that I broke (frozen nut on the rigid line that bends around the king pin), learning how to properly set the float on the king pin, and driving myself crazy realigning the lower control arm bushing in the control arm.
That said, if you are not doing the control arm bushings the job will take less than a day, and there are very few opportunities to break or screw things up. There are plenty of posts on the board to help with each job.
Best,
g
'64 230sl, fully sorted out...ooops, spoke too soon