Emris -
First of all, I fully agree with villers' comments about buying a shooter Luger.
I have done exactly as he recommends, and I do not shoot matching, collectable Lugers.
However, it is your gun, and some owners choose to shoot them. Your call. If you do shoot the Luger you have, you can obtain the parts you need from Tom Heller (lugerdoc on this forum) at a reasonable cost. I would definitely replace the breech block and the extractor. Also, you might consider a pair of VOPO plastic grips if your gun has checkered walnut grips. The VOPO grips fit well, feel good in the shooting hand, and are almost unbreakable.
Good luck.
Luke