I don't know what this camera is worth to you but I would certainly try, especially if it is as easy as you say. I had a similar situation with two Mamiya 6 folders (the old 6). The one with the broken shutter had cleaner glass. In the end I kept one element from the dirtier lens and the rest were from the one with the broken shutter. It all worked out just fine and the finished product was better than either of its predecessors.

If it doesn't work, just put it back like it was and get it professionally fixed or cleaned!