You will be draining coolant, so fresh coolant will be necessary. You will be accessing the upper radiator hose - may be a good time to replace that while you're there. Same thing with the belt and tensioner - while you're there, check those. You will need thread locker for the intake bolts on reinstallation.
That's all I can think of right now...of course doing the job, something else may be noticed and advised. Also, broken bolts and a stuck EGR tube could be a problem on removal too.