I did mine on a F250, and like you said. Took a long time, but not too bad.
Check out this series of videos, it's step by step and very comprehensive.
Also, a word of caution: keep everything very clean! Especially when you have your oil cooler out, get the cavity it sits in spotless. Use shop towels that won't leave anything behind, and be especially careful around the screen you will be replacing. Oil goes through the screen to the IPR and your HPOP. I was pretty careful, but didn't realize how high the stakes were. After I got everything together I ran it for a couple of trips and then debris took out my IPR. Not cheap, and a bit of a pain to replace (and it stranded me).
Also, when you are done you will have air in your system which you will have to purge. Let it idle for a long time before driving, and then take it out on the freeway and hammer it. You will likely hear "moaning" sounds as the air purges (which really freaked me out, I thought I had a new problem). Until the air purges it runs like crap.