Should do, all pre order pack codes I have used are out in using the redeem code. Also if you accidently delete the Pre-order pack, there is a way too re-download it (The code wont work twice tho)
For anyone who wants to know how to do that it's quite easy. This is how you do it for X-box 360.
First sign into X-box live, then under the My Xbox channel go to the tab that has your gamertag, gamerscore, and avatar. Press A. You should then see a tab that says Account Management. Go select that, then select Manage Account, Download History, select whatever you want to re-download and then select Download Again. Voila! It's as east as that.