A couple of thoughts here.
1) the Ford shop manual procedure is
made designed for stock Ford cams. The stock 289hp cam is an extremely mild profile. The engine was expected to run smooth and quietly new.
2) solid lifter cams are quite capable of running safely with a plus or minus .002". The possible valve train combinations such as aluminum roller rockers are all going to fall between those specs generally speaking.
3) if you have verified your valve train geometry as recommended by manufacturers such as Compcams then component failure is likely to be caused by other issues.
4) hydraulic lifter cams are made for a reason. Someone once wrote, "the meek shall inherit the Earth"... and I would add, hydraulic lifter cams as well.
The Compcams procedure of course will work but I can tell you that if you go that route, it's going to take DAYS if not weeks to get through it. In addition, you will find it more convenient to take off your hood but don't forget to cover the ceiling, walls and floor of the garage with 6 mil plastic because there is going to be oil everywhere, and it's hot and it burns.
The Ford procedure is the simplest and has the least variation from variables. I've been doing this since 1968. I have plenty of bumps of knowledge and strange proclivities for a reason. There is no substitute for experience here. Be the trail blazer that you want to. No one is going to stop you. Maybe you will be recognized in 35 years as a survivor? No one has shot me yet either, not yet, but I ain't dead yet. In this country, that says a lot?