Take the head to a reputable machine shop and have them go through it. They'll check all the valves and make sure the head is not warped.
I highly doubt the cams or sprockets come with any head gasket kit. Most times the kit has all the seals and gaskets to replace everything you take off when you remove the head. Many manufacturers recommend you replace the head bolts as well as they stretch when installed. They have very specific torque specs and sequences to pay attention to. If you don't already have one, pick up a repair manual(Haynes, Chilton or other).
I'd probably replace the tensioner for the chain, the tensioner for the serpentine belt, the serpentine belt itself, water pump, thermostat(it has to come out to get the water pump out), crank seal at the harmonic balancer,and basically any other relatively low-dollar part that is in the vicinity of this repair. It would suck to have to do this job again to replace a $20 part.
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Yous just figures that out? All the hots ones is crazy!...And deh ugly ones too. - Toki Wartooth