Help with cam selection

That 4" arm soaks up a lot of camshaft. I had pieced together a mild 408 myself, to run the 11:50 zone. I ended up with the primary choice being a 258/270@ solid roller.I ended up with a [email protected] solid flat tappet.(Comp 294s).Idled like a pussycat. Fishy68 just went low 12's@112 with 3:55 gears,with a similar cam. Curious what other people will comment.