You will be 1/4th way through replacing the U joints by the time you get it out. More than likely you have U joints where the caps are bolted in and you have to remove two caps on each joint to get the shaft out. Not that hard to get the caps out but getting the new ones back in without displacing the needles can be difficult if you have not done it before. You will be laying on your back holding the shaft with one hand and trying to slide the cap on with the other while keeping everything aligned. You do not know if you've hit one of the needles in the cap until you cannot get the last cap to bolt all the way up.
Since you did your own CAC repair this is something you might be able to do but I'd have a truck repair place price it out as they may be able to buy the joints cheaper so letting them do it might add up as it should only take one hour.