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Re: joel's build
How high do you plan to rev? How many miles are on your stock springs/retainers?
The cams will be increasing valve liftand duration over stock, so you will be asking more from your valvetrain which increases your risk of failure. The risk increases more if you plan to rev higher, or your stock components are tired. Whether or not that risk is increased by enough to make it worth upgrading is your call.
If it were me, if the head was coming off I'd get new springs put in. If not, I'd run the stock stuff and just not rev it to the moon, and replace the springs next time the head comes off.
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