Its just a lot of work till something goes wrong. We have done hundreds of those jobs and they usually go through the shop like a large waterpump job. One out of three lately has caused us grief.
It probably is due to the fact that they are all at least 10 years old now, but we have had a bolt or more give us trouble on one out of three lately. How handy you are with these issues will tell whether it will break your back. I must point out that these bolt issues came up even with techs who have done the job multiple times with proper tools and a knowing technique.
I have dealt with many a tech would could make a major bolt problem out of every cam stand bolt without technique. It really is just a job of screwing and unscrewing 300 bolts. No problems and its a piece of cake.
Bosch Master, ASE Master, L1
33 years MB technician