If all that technical jazz is confusing . . . here is a more simple method . . .

1) Pick a couple of files with lots of colors . . the type of photograph you take most of the time. (landscape, portrait, whatever)
2) Adjust them in PSE, or PS and size them properly to 5 x 7 / 300 dpi in sRGB
3) Send them to your Costco for prints indicating to them "no auto color correction"
4) When you get them home . . . compare the colors to your monitor
5) Adjust the color, brightness and contrast of your monitor to match the prints as close as possible.
6) Choose two more files and adjust and size them as before, but with the newly reset monitor
7) Repeat steps 3, 4 and 5
8) Do it all over again at least one more time.

You'll be impressed with the consistency of results after this. Investment? 6 or 8 - 5x7 prints

Hope that helps . .

I process on my 27-inch iMac. A great tool with plenty of space and regular backups.
Because I shoot in raw, I use ImageCapture to move my .nef files to folder FromtheCamera. After reviewing them and deleting junk, I process them with PSE and ACR into folder ToIPhoto, then import them into iPhoto, keyword them, etc.
After import I delete everything in ToIphoto, and move the .nefs to a FromtheCamera yearly subfolder and then into that year's monthly sub-subfolders.
If someone wants a printable file from any of my iPhotos, I always go to the .nef original and redo the photo to the customer's specs.