Recently, my chain has become so stretched that it is now at the very end of the dropout. I haven't thrown the chain yet, but I am worried about any problems that may come because of the current tension.

Should I remove a link so I can adjust the tension? Would this compromise the total integrity of the chain? Should I purchase a new chain?

I'm riding from San Diego to Los Angeles this weekend and I'm trying to get all my eggs inside of a basket or whatever.