You dont want to buy 5 different allen wrenches?!
if your cheap/broke ,tell people to get you some tool sets for christmass ,you will also need a torque wrench ,but some parts stores will loan you one if you buy the parts from them.If your seriouse about wrenching on your own car that is.And a book specific to your car would be very helpfull in the garage too.The best present I ever got was a 2 1/2 ton engine hoist.I always ask for tools and parts.Good luck with the head gasket change