How to Pick Your own CamShaft better.

I Feel overlap is the most over looked camshaft spec, lift is the easiest spec to figure out. I like David Vizards approach, figure the LSA and overlap you want/need and the duration will take care of itself.

Not saying got to follow his formula 100% just like the basic idea of it.

https://www.hotrod.com/articles/0607phr-camshaft-basics/