sorry, another color profile workflow question

I calibrated my monitor yesterday.
Do I have this right? I'm using Windows 7.
For soft-proofing in Photoshop, go under Views > Proof Setup, and create a custom profile using the printer profile (let's say Costco's for their poster printer).
Then select that profile in Views > Proof Setup, and make sure Views > Proof Colors is checked.
After final image adjustments, obviously the file need to be saved.
I've heard/read so many different things here, I don't know what's best.
Should these be the next 2 steps?
Edit > Convert to Profile... and choose the correct printer profile.
Then File > Save As... and UNcheck the .icc profile under Color: in the dialog box?
Is this correct? I've heard the box needs to be unchecked or else the profile is applied twice.
I'd appreciate any help.
Thanks in advance.

Personally, I save the file without converting, just making sure that the correct icc profile appears in the file name along with the rendering intent (perceptual, etc.).

Typical file name would be: _IGP7886hummingbird_5-23-12_HNSugCan(3)_(RelBPC​)

If you do convert before saving then yes, you are correct in assuming you must uncheck the icc profile when printing.

So it's an either-or thing?
Thanks!

twoshadows wrote in post #15168453
If you do convert before saving then yes, you are correct in assuming you must uncheck the icc profile when printing.

That depends on what the printing company expects.
I see no reason whatsoever to save without icc profile (and several arguments against it).

If you print yourself (say, on an Epson at home) converting makes little sense anyhow.