I think the average person would need a day to do it properly. It's not that tough of a job, but there are quite a few things that need to be removed. If you have a certain thing removed from the top of the passenger side cylinder head that no one likes, you will save a lot of time. I believe the hard lines from the pump outlets to the fuel rails are one time use only so they would need to be replaced. But basically intake removed, vacuum pump removed, need to remove nut off hpfp, 3 bolts on the back of the pump and its out.
I can't recall the size of the nut on the hpfp gear, but might be a good idea to see if you have the correct socket before starting. I want to say it's around 32-34mm