You should certainly back up the profile, yes, because it might be better than nothing.
But you will need to borrow the calibrator again once your new card is up and running.
That's excellent. Really good quality.
Have no fear, my friend. The print will look excellent.
Make sure you send a PDF file to the printer, not a jpeg. http://www.damiensymonds.net/2010/05/making-pdfs-from-photoshop.html
Have you read this?
What leaps out from your photo and smacks me in the face is the terrible mixed lighting. You MUST get that under control if you desire beauty in your shots.