To clarify, are you replacing only the clutch or the whole compressor? If the system was working fine and the compressor is still good I would suggest just changing the clutch.
If the compressor has mechanically failed that usually means contamination has gone into the system. You should check with more JD savvy folks but most A/C guys are going to say replace the condenser, dryer, and expansion valve when replacing a compressor. There is no good way to flush the condenser so it needs to go since it is the lowest mounted component and will accumulate contaminates. While you have the system apart inspect and flush the evaporator and clean everything up really well. You will be glad you did.
I am hearing more and more people say Not to use flush solvent and only use nitrogen to flush/purge the system.
Make sure you get the same style compressor, make sure it is shipped with the correct amount of oil (normal) or know how much oil to replace. If you are handy with a wrench and have a reasonable amount of experience the parts replacement is straightforward. There will be several O-rings to replace. You will need a vacuum pump, charge hoses & gauge set. I suggest finding the stated charge amount to have an idea of charge. Then the rest is up to the ambient temperature, how clean the system is on reinstallation, and any charge losses.
Changing compressor and getting the charge right in freezing temperatures could be tough. Again, it you just need the clutch that is the way to go.