basic cam question
All the items listed above should be swapped out regardless of milage. A new timing chain and oil pump arnt a "must", but most people like to replace them while its apart.
One thing you did miss to mention were the lifters. Some people decide to replace them, but most dont since it requires pulling the heads. When i did my cam, i decided not to replace the lifters, because im going to be buying some heads in the near future and didnt want to pull the heads twice.

