Are you going to be installing a ductile iron or a billet roller?
It is easiest if you talk to one of the vendors and get a kit with cam,springs, lifters, pushrods, correct timing chain, etc.
It is wise to get an adjustable length pushrod checker, and you will need a dial indicator to set the endplay of the cam if you are using a ductile iron setup. Someone correct me if I am wrong but all the billet roller setups I have seen have a spring loaded front button to control endplay. Again talk to your vendor to make sure you get everything you need.
Other than making sure you have the endplay set right, make sure you DO NOT use a timing chain tensioner with a double roller chain. HTH