Plan on at least 4-6 hours.
The fronts are relatively easy, it's the rears that will give you a headache.
( always remove the top nuts before jacking up the car )
After the top nuts are removed and the car is raised, the rear shocks will not come out without a LOT of prying down on the lower suspension.
You will have to pre-compress the new rear shocks and secure with tie-wraps in order to get them in. ( 2 person job )
Once they are in, cut the tie wraps.
Remember to lube everything up with suspension grease, or white lithium ( I used the lithium )
At the top on all 4 corners, the order is : big washer, big rubber spacer, through the hole, then small rubber spacer, big washer then jam nuts.
( The instructions ain't too good )

Another problem you will face is getting the rear wheels back on. The suspension drops and goes forward, the wheel hits the front and won't go on the centering ring.
You have to use a scissor jack or the like to jack the suspension up enough to get the wheel on.

Another note: If you are getting them from Rock Auto, make sure they send you the front shocks that have the upper boots.
Mine had none, and the two that JoeP got didn't either. I sent mine back and got the right ones withing a week.
I haven't heard if Joe got the right ones yet.