Does this prove David Vizard's 128 lsa formula ?

My opinion @Ant is for what you want, go with one of the cam guys that you're comfortable with. You want to experiment and/or compare? then sure do a DV formula and pick one yourself. You want something that will do what you want withoutout much risk? then go with one of the guys in the business. Guys spend a lifetime in this and the smart ones are always learning and they have the experience to keep you from taking a risky path. Mike Jones, Racer Brown, and there's others. In some cases it might be the guy your engine builder or shop has worked with. As part of my decision making, if looking to take advantage of the engine design - and it sounds like you are - go with a guy who is familiar with what makes your engine different from a Chev 350, or Windsor, etc.