Head gaskets are what is referred to as a "crush-type" gasket. A crush type gasket actually "crushes", which helps it maintain a strong and proper seal. That also helps it mate properly to both sides of your engine. When you remove the head and re-install it, there's no guarantee that it will line up in the exact location it did when it was first installed, and it's extremely likely it will leak again.

FYI, I had my head gasket done "professionally", and the first time I ran her she leaked. I had that brand new gasket on there less than a couple weeks, and I'm still replacing mine with a brand new cometic unit. I even opted to have the head checked by a machine shop to ensure it's still true before reinstalling. You do as you wish, just friendly advice.