First off, congrats on finding some tickets for you and your girl. I'm glad someone came thru for ya.
If you go back into the ticket forum, there is a sticky thread called Stadium Views that will give you an idea of where you're sitting.
And my personal opinion is that those seats are Great! 24C is about 30 yard line and row 13 is awesome! (when you walk in the rows start at 6. 5 thru 1 go down, then 6 thru 42 go up)
It definitely won't be as loud, and A / AA is more "right on top of the action", but C Deck allows you to see the whole field & each play develope in a way that you don't get down low. And the Jumbo Screen is right there for the "up close feel" on replays.
I love those seats and would sit there in a sec!